Responsive Periodic Table of Elements Using HTML and CSS (Free Source Code)

A Responsive Periodic Table of Elements Using HTML and CSS allows the elegant and engaging display of the periodic table on your site.

No matter if you are creating an educational site, a scientific website or if you just found an interesting idea for a project, this free source code can offer you a clean and modern design which fits every device. Be prepared for an improved functionality and beautiful look of your site!

GitHub Source: Responsive Periodic Table of Elements

Features

  • Easy to Customize: Change colours, font, or structure quick and easy to your desired look.
  • Animation: A cool animation about electronic configuration, while clicking on elements
  • Compatibility: Our Periodic Table suits all modern browsers and devices just perfectly.
  • Clean Code: The source code correctly follows the best practices of programming languages, and therefore it is easy to read and modify.

Technologies Used

  • HTML (Hypertext Markup Language)
  • CSS (Cascading Style Sheets)

Recommended for You

Video Tutorial

Steps to Build Chemistry Periodic Table

  • Create Project Folder: First, create a folder to store all the files that will concern the project.
  • Create index.html: Add the main HTML file which contains the structure of your periodic table.
  • Create style.css: You should also link the CSS file for your table style.
  • Copy & Paste the Code: Below is the code that you need to use for your project.

HTML

Here is the HTML code for your index.html file:

<!DOCTYPE html>
<html lang="en" >
<head>
  <meta charset="UTF-8">
  <title>Responsive Periodic Table of Elements - JV Codes</title>
  <link rel="stylesheet" href="./style.css">
</head>
<body>
  <!--If you want to watch more animation.-->
<!--Then go to our youtube channel.-->
<!--https://youtube.com/@jvcodes-->
<div class="wrapper">
  <input class="category-toggle" type="radio" id="alkali-metals" name="categories"/>
  <input class="category-cancel" type="radio" id="cancel" name="categories"/>
  <input class="category-toggle" type="radio" id="alkaline-earth-metals" name="categories"/>
  <input class="category-cancel" type="radio" id="cancel" name="categories"/>
  <input class="category-toggle" type="radio" id="lanthanoids" name="categories"/>
  <input class="category-cancel" type="radio" id="cancel" name="categories"/>
  <input class="category-toggle" type="radio" id="actinoids" name="categories"/>
  <input class="category-cancel" type="radio" id="cancel" name="categories"/>
  <input class="category-toggle" type="radio" id="transition-metals" name="categories"/>
  <input class="category-cancel" type="radio" id="cancel" name="categories"/>
  <input class="category-toggle" type="radio" id="post-transition-metals" name="categories"/>
  <input class="category-cancel" type="radio" id="cancel" name="categories"/>
  <input class="category-toggle" type="radio" id="metalloids" name="categories"/>
  <input class="category-cancel" type="radio" id="cancel" name="categories"/>
  <input class="category-toggle" type="radio" id="other-nonmetals" name="categories"/>
  <input class="category-cancel" type="radio" id="cancel" name="categories"/>
  <input class="category-toggle" type="radio" id="noble-gasses" name="categories"/>
  <input class="category-cancel" type="radio" id="cancel" name="categories"/>
  <input class="category-toggle" type="radio" id="unknown" name="categories"/>
  <input class="category-cancel" type="radio" id="cancel" name="categories"/>
  <div class="periodic-table">
    <div class="element other-nonmetal c1 r1">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">1</div>
        <div class="label">
          <div class="symbol">H</div>
          <div class="name">Hydrogen</div>
        </div>
        <div class="atomic-mass">1.008</div>
        <ul class="atomic-weight">
          <li>1</li>
        </ul>
      </div>
    </div>
    <div class="element noble-gas c18 r1">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">2</div>
        <div class="label">
          <div class="symbol">He</div>
          <div class="name">Helium</div>
        </div>
        <div class="atomic-mass">4.0026</div>
        <ul class="atomic-weight">
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element alkali-metal c1 r2">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">3</div>
        <div class="label">
          <div class="symbol">Li</div>
          <div class="name">Lithium</div>
        </div>
        <div class="atomic-mass">6.94</div>
        <ul class="atomic-weight">
          <li>3</li>
        </ul>
      </div>
    </div>
    <div class="element alkaline-earth-metal c2 r2">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">4</div>
        <div class="label">
          <div class="symbol">Be</div>
          <div class="name">Beryllium</div>
        </div>
        <div class="atomic-mass">9.0122</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element metalloid c13 r2">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">5</div>
        <div class="label">
          <div class="symbol">B</div>
          <div class="name">Boron</div>
        </div>
        <div class="atomic-mass">10.81</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>3</li>
        </ul>
      </div>
    </div>
    <div class="element other-nonmetal c14 r2">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">6</div>
        <div class="label">
          <div class="symbol">C</div>
          <div class="name">Carbon</div>
        </div>
        <div class="atomic-mass">12.011</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>4</li>
        </ul>
      </div>
    </div>
    <div class="element other-nonmetal c15 r2">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">7</div>
        <div class="label">
          <div class="symbol">N</div>
          <div class="name">Nitrogen</div>
        </div>
        <div class="atomic-mass">14.007</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>5</li>
        </ul>
      </div>
    </div>
    <div class="element other-nonmetal c16 r2">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">8</div>
        <div class="label">
          <div class="symbol">O</div>
          <div class="name">Oxygen</div>
        </div>
        <div class="atomic-mass">15.999</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>6</li>
        </ul>
      </div>
    </div>
    <div class="element other-nonmetal c17 r2">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">9</div>
        <div class="label">
          <div class="symbol">F</div>
          <div class="name">Flourine</div>
        </div>
        <div class="atomic-mass">18.998</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>7</li>
        </ul>
      </div>
    </div>
    <div class="element noble-gas c18 r2">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">10</div>
        <div class="label">
          <div class="symbol">Ne</div>
          <div class="name">Neon</div>
        </div>
        <div class="atomic-mass">20.18</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
        </ul>
      </div>
    </div>
    <div class="element alkali-metal c1 r3">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">11</div>
        <div class="label">
          <div class="symbol">Na</div>
          <div class="name">Sodium</div>
        </div>
        <div class="atomic-mass">22.99</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>1</li>
        </ul>
      </div>
    </div>
    <div class="element alkaline-earth-metal c2 r3">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">12</div>
        <div class="label">
          <div class="symbol">Mg</div>
          <div class="name">Magnesium</div>
        </div>
        <div class="atomic-mass">24.305</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element post-transition-metal c13 r3">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">13</div>
        <div class="label">
          <div class="symbol">Al</div>
          <div class="name">Aluminium</div>
        </div>
        <div class="atomic-mass">26.982</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>3</li>
        </ul>
      </div>
    </div>
    <div class="element metalloid c14 r3">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">14</div>
        <div class="label">
          <div class="symbol">Si</div>
          <div class="name">Silicon</div>
        </div>
        <div class="atomic-mass">28.085</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>4</li>
        </ul>
      </div>
    </div>
    <div class="element other-nonmetal c15 r3">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">15</div>
        <div class="label">
          <div class="symbol">P</div>
          <div class="name">Phosphorus</div>
        </div>
        <div class="atomic-mass">30.974</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>5</li>
        </ul>
      </div>
    </div>
    <div class="element other-nonmetal c16 r3">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">16</div>
        <div class="label">
          <div class="symbol">S</div>
          <div class="name">Sulfur</div>
        </div>
        <div class="atomic-mass">32.06</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>6</li>
        </ul>
      </div>
    </div>
    <div class="element other-nonmetal c17 r3">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">17</div>
        <div class="label">
          <div class="symbol">Cl</div>
          <div class="name">Chlorine</div>
        </div>
        <div class="atomic-mass">35.45</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>7</li>
        </ul>
      </div>
    </div>
    <div class="element noble-gas c18 r3">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">18</div>
        <div class="label">
          <div class="symbol">Ar</div>
          <div class="name">Argon</div>
        </div>
        <div class="atomic-mass">39.948</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>8</li>
        </ul>
      </div>
    </div>
    <div class="element alkali-metal c1 r4">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">19</div>
        <div class="label">
          <div class="symbol">K</div>
          <div class="name">Potassium</div>
        </div>
        <div class="atomic-mass">39.098</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>8</li>
          <li>1</li>
        </ul>
      </div>
    </div>
    <div class="element alkaline-earth-metal c2 r4">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">20</div>
        <div class="label">
          <div class="symbol">Ca</div>
          <div class="name">Calcium</div>
        </div>
        <div class="atomic-mass">40.078</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>8</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element transition-metal c3 r4">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">21</div>
        <div class="label">
          <div class="symbol">Sc</div>
          <div class="name">Scandium</div>
        </div>
        <div class="atomic-mass">44.956</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>9</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element transition-metal c4 r4">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">22</div>
        <div class="label">
          <div class="symbol">Ti</div>
          <div class="name">Titanium</div>
        </div>
        <div class="atomic-mass">47.867</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>10</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element transition-metal c5 r4">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">23</div>
        <div class="label">
          <div class="symbol">V</div>
          <div class="name">Vanadium</div>
        </div>
        <div class="atomic-mass">50.942</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>11</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element transition-metal c6 r4">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">24</div>
        <div class="label">
          <div class="symbol">Cr</div>
          <div class="name">Chromium</div>
        </div>
        <div class="atomic-mass">51.996</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>13</li>
          <li>1</li>
        </ul>
      </div>
    </div>
    <div class="element transition-metal c7 r4">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">25</div>
        <div class="label">
          <div class="symbol">Mn</div>
          <div class="name">Manganese</div>
        </div>
        <div class="atomic-mass">54.938</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>13</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element transition-metal c8 r4">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">26</div>
        <div class="label">
          <div class="symbol">Fe</div>
          <div class="name">Iron</div>
        </div>
        <div class="atomic-mass">55.845</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>14</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element transition-metal c9 r4">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">27</div>
        <div class="label">
          <div class="symbol">Co</div>
          <div class="name">Cobalt</div>
        </div>
        <div class="atomic-mass">58.933</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>15</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element transition-metal c10 r4">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">28</div>
        <div class="label">
          <div class="symbol">Ni</div>
          <div class="name">Nickel</div>
        </div>
        <div class="atomic-mass">58.693</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>16</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element transition-metal c11 r4">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">29</div>
        <div class="label">
          <div class="symbol">Cu</div>
          <div class="name">Copper</div>
        </div>
        <div class="atomic-mass">63.546</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>1</li>
        </ul>
      </div>
    </div>
    <div class="element transition-metal c12 r4">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">30</div>
        <div class="label">
          <div class="symbol">Zn</div>
          <div class="name">Zinc</div>
        </div>
        <div class="atomic-mass">65.38</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element post-transition-metal c13 r4">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">31</div>
        <div class="label">
          <div class="symbol">Ga</div>
          <div class="name">Gallium</div>
        </div>
        <div class="atomic-mass">69.723</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>3</li>
        </ul>
      </div>
    </div>
    <div class="element metalloid c14 r4">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">32</div>
        <div class="label">
          <div class="symbol">Ge</div>
          <div class="name">Germanium</div>
        </div>
        <div class="atomic-mass">72.63</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>4</li>
        </ul>
      </div>
    </div>
    <div class="element metalloid c15 r4">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">33</div>
        <div class="label">
          <div class="symbol">As</div>
          <div class="name">Arsenic</div>
        </div>
        <div class="atomic-mass">74.922</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>5</li>
        </ul>
      </div>
    </div>
    <div class="element other-nonmetal c16 r4">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">34</div>
        <div class="label">
          <div class="symbol">Se</div>
          <div class="name">Selenium</div>
        </div>
        <div class="atomic-mass">78.971</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>6</li>
        </ul>
      </div>
    </div>
    <div class="element other-nonmetal c17 r4">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">35</div>
        <div class="label">
          <div class="symbol">Br</div>
          <div class="name">Bromine</div>
        </div>
        <div class="atomic-mass">79.904</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>7</li>
        </ul>
      </div>
    </div>
    <div class="element noble-gas c18 r4">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">36</div>
        <div class="label">
          <div class="symbol">Kr</div>
          <div class="name">Krypton</div>
        </div>
        <div class="atomic-mass">83.798</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>8</li>
        </ul>
      </div>
    </div>
    <div class="element alkali-metal c1 r5">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">37</div>
        <div class="label">
          <div class="symbol">Rb</div>
          <div class="name">Rubidium</div>
        </div>
        <div class="atomic-mass">85.468</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>8</li>
          <li>1</li>
        </ul>
      </div>
    </div>
    <div class="element alkaline-earth-metal c2 r5">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">38</div>
        <div class="label">
          <div class="symbol">Sr</div>
          <div class="name">Strontium</div>
        </div>
        <div class="atomic-mass">87.62</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>8</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element transition-metal c3 r5">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">39</div>
        <div class="label">
          <div class="symbol">Y</div>
          <div class="name">Yttrium</div>
        </div>
        <div class="atomic-mass">88.906</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>9</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element transition-metal c4 r5">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">40</div>
        <div class="label">
          <div class="symbol">Zr</div>
          <div class="name">Zirconium</div>
        </div>
        <div class="atomic-mass">91.224</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>10</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element transition-metal c5 r5">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">41</div>
        <div class="label">
          <div class="symbol">Nb</div>
          <div class="name">Niobium</div>
        </div>
        <div class="atomic-mass">92.906</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>12</li>
          <li>1</li>
        </ul>
      </div>
    </div>
    <div class="element transition-metal c6 r5">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">42</div>
        <div class="label">
          <div class="symbol">Mo</div>
          <div class="name">Molybdenum</div>
        </div>
        <div class="atomic-mass">95.95</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>13</li>
          <li>1</li>
        </ul>
      </div>
    </div>
    <div class="element transition-metal c7 r5">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">43</div>
        <div class="label">
          <div class="symbol">Tc</div>
          <div class="name">Technetium</div>
        </div>
        <div class="atomic-mass">(98)</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>13</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element transition-metal c8 r5">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">44</div>
        <div class="label">
          <div class="symbol">Ru</div>
          <div class="name">Ruthenium</div>
        </div>
        <div class="atomic-mass">101.07</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>15</li>
          <li>1</li>
        </ul>
      </div>
    </div>
    <div class="element transition-metal c9 r5">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">45</div>
        <div class="label">
          <div class="symbol">Rh</div>
          <div class="name">Rhodium</div>
        </div>
        <div class="atomic-mass">102.91</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>16</li>
          <li>1</li>
        </ul>
      </div>
    </div>
    <div class="element transition-metal c10 r5">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">46</div>
        <div class="label">
          <div class="symbol">Pd</div>
          <div class="name">Palladium</div>
        </div>
        <div class="atomic-mass">106.42</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>18</li>
        </ul>
      </div>
    </div>
    <div class="element transition-metal c11 r5">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">47</div>
        <div class="label">
          <div class="symbol">Ag</div>
          <div class="name">Silver</div>
        </div>
        <div class="atomic-mass">107.87</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>18</li>
          <li>1</li>
        </ul>
      </div>
    </div>
    <div class="element transition-metal c12 r5">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">48</div>
        <div class="label">
          <div class="symbol">Cd</div>
          <div class="name">Cadmium</div>
        </div>
        <div class="atomic-mass">112.41</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>18</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element post-transition-metal c13 r5">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">49</div>
        <div class="label">
          <div class="symbol">In</div>
          <div class="name">Indium</div>
        </div>
        <div class="atomic-mass">114.82</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>18</li>
          <li>3</li>
        </ul>
      </div>
    </div>
    <div class="element post-transition-metal c14 r5">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">50</div>
        <div class="label">
          <div class="symbol">Sn</div>
          <div class="name">Tin</div>
        </div>
        <div class="atomic-mass">204.38</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>18</li>
          <li>4</li>
        </ul>
      </div>
    </div>
    <div class="element metalloid c15 r5">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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          <div class="orbital">
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">51</div>
        <div class="label">
          <div class="symbol">Sb</div>
          <div class="name">Antimony</div>
        </div>
        <div class="atomic-mass">121.76</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>18</li>
          <li>5</li>
        </ul>
      </div>
    </div>
    <div class="element metalloid c16 r5">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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          <div class="orbital">
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">52</div>
        <div class="label">
          <div class="symbol">Te</div>
          <div class="name">Tellurium</div>
        </div>
        <div class="atomic-mass">127.6</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>18</li>
          <li>6</li>
        </ul>
      </div>
    </div>
    <div class="element other-nonmetal c17 r5">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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          <div class="orbital">
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
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          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
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        <div class="atomic-number">53</div>
        <div class="label">
          <div class="symbol">I</div>
          <div class="name">Iodine</div>
        </div>
        <div class="atomic-mass">126.9</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>18</li>
          <li>7</li>
        </ul>
      </div>
    </div>
    <div class="element noble-gas c18 r5">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
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            <div class="electron"></div>
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            <div class="electron"></div>
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          <div class="orbital">
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            <div class="electron"></div>
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            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
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          <div class="orbital">
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          <div class="orbital">
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            <div class="electron"></div>
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            <div class="electron"></div>
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            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">54</div>
        <div class="label">
          <div class="symbol">Xe</div>
          <div class="name">Xenon</div>
        </div>
        <div class="atomic-mass">131.29</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>18</li>
          <li>8</li>
        </ul>
      </div>
    </div>
    <div class="element alkali-metal c1 r6">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">55</div>
        <div class="label">
          <div class="symbol">Cs</div>
          <div class="name">Caesium</div>
        </div>
        <div class="atomic-mass">132.91</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>18</li>
          <li>8</li>
          <li>1</li>
        </ul>
      </div>
    </div>
    <div class="element alkaline-earth-metal c2 r6">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">56</div>
        <div class="label">
          <div class="symbol">Ba</div>
          <div class="name">Barium</div>
        </div>
        <div class="atomic-mass">137.33</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>18</li>
          <li>8</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element lanthanoid c4 r9">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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          <div class="orbital">
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">57</div>
        <div class="label">
          <div class="symbol">La</div>
          <div class="name">Lanthanum</div>
        </div>
        <div class="atomic-mass">138.91</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>18</li>
          <li>9</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element lanthanoid c5 r9">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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          <div class="orbital">
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">58</div>
        <div class="label">
          <div class="symbol">Ce</div>
          <div class="name">Cerium</div>
        </div>
        <div class="atomic-mass">140.12</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>19</li>
          <li>9</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element lanthanoid c6 r9">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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          <div class="orbital">
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">59</div>
        <div class="label">
          <div class="symbol">Pr</div>
          <div class="name">Praseodymium</div>
        </div>
        <div class="atomic-mass">140.91</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>21</li>
          <li>8</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element lanthanoid c7 r9">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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          <div class="orbital">
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            <div class="electron"></div>
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            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
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          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">60</div>
        <div class="label">
          <div class="symbol">Nd</div>
          <div class="name">Neodymium</div>
        </div>
        <div class="atomic-mass">144.24</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>22</li>
          <li>8</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element lanthanoid c8 r9">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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          <div class="orbital">
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            <div class="electron"></div>
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          <div class="orbital">
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            <div class="electron"></div>
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            <div class="electron"></div>
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          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
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        <div class="atomic-number">61</div>
        <div class="label">
          <div class="symbol">Pm</div>
          <div class="name">Promethium</div>
        </div>
        <div class="atomic-mass">144.24</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>23</li>
          <li>8</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element lanthanoid c9 r9">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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          <div class="orbital">
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            <div class="electron"></div>
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          <div class="orbital">
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            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
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          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
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        <div class="atomic-number">62</div>
        <div class="label">
          <div class="symbol">Sm</div>
          <div class="name">Samarium</div>
        </div>
        <div class="atomic-mass">150.36</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>24</li>
          <li>8</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element lanthanoid c10 r9">
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        <div class="atomic-number">82</div>
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          <li>2</li>
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    <div class="element post-transition-metal c15 r6">
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">84</div>
        <div class="label">
          <div class="symbol">Po</div>
          <div class="name">Polonium</div>
        </div>
        <div class="atomic-mass">(209)</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>32</li>
          <li>18</li>
          <li>6</li>
        </ul>
      </div>
    </div>
    <div class="element metalloid c17 r6">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">85</div>
        <div class="label">
          <div class="symbol">At</div>
          <div class="name">Astatine</div>
        </div>
        <div class="atomic-mass">(210)</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>32</li>
          <li>18</li>
          <li>7</li>
        </ul>
      </div>
    </div>
    <div class="element noble-gas c18 r6">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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          <div class="orbital">
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            <div class="electron"></div>
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          </div>
          <div class="orbital">
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            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
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          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">86</div>
        <div class="label">
          <div class="symbol">Rn</div>
          <div class="name">Radon</div>
        </div>
        <div class="atomic-mass">(222)</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>32</li>
          <li>18</li>
          <li>8</li>
        </ul>
      </div>
    </div>
    <div class="element alkali-metal c1 r7">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
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          <div class="orbital">
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            <div class="electron"></div>
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          <div class="orbital">
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            <div class="electron"></div>
            <div class="electron"></div>
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          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">87</div>
        <div class="label">
          <div class="symbol">Fr</div>
          <div class="name">Francium</div>
        </div>
        <div class="atomic-mass">(223)</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>32</li>
          <li>18</li>
          <li>8</li>
          <li>1</li>
        </ul>
      </div>
    </div>
    <div class="element alkaline-earth-metal c2 r7">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
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          </div>
          <div class="orbital">
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            <div class="electron"></div>
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            <div class="electron"></div>
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          <div class="orbital">
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            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
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          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">88</div>
        <div class="label">
          <div class="symbol">Ra</div>
          <div class="name">Radium</div>
        </div>
        <div class="atomic-mass">(226)</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>32</li>
          <li>18</li>
          <li>8</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element actinoid c4 r10">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">89</div>
        <div class="label">
          <div class="symbol">Ac</div>
          <div class="name">Actinium</div>
        </div>
        <div class="atomic-mass">(227)</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>32</li>
          <li>18</li>
          <li>9</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element actinoid c5 r10">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
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          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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          </div>
          <div class="orbital">
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
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            <div class="electron"></div>
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          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">90</div>
        <div class="label">
          <div class="symbol">Th</div>
          <div class="name">Thorium</div>
        </div>
        <div class="atomic-mass">232.04</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
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          <li>18</li>
          <li>10</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element actinoid c6 r10">
      <input class="activate" type="radio" name="elements"/>
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      <div class="overlay"></div>
      <div class="square">
        <div class="model">
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            <div class="electron"></div>
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          <div class="orbital">
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          <div class="orbital">
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            <div class="electron"></div>
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          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">91</div>
        <div class="label">
          <div class="symbol">Pa</div>
          <div class="name">Protactinium</div>
        </div>
        <div class="atomic-mass">231.04</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>32</li>
          <li>20</li>
          <li>9</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element actinoid c7 r10">
      <input class="activate" type="radio" name="elements"/>
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      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
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          <div class="orbital">
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            <div class="electron"></div>
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          <div class="orbital">
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            <div class="electron"></div>
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          <div class="orbital">
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          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
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          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">92</div>
        <div class="label">
          <div class="symbol">U</div>
          <div class="name">Uranium</div>
        </div>
        <div class="atomic-mass">238.03</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>32</li>
          <li>21</li>
          <li>9</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element actinoid c8 r10">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
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          <div class="orbital">
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          <div class="orbital">
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          <div class="orbital">
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          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">93</div>
        <div class="label">
          <div class="symbol">Np</div>
          <div class="name">Neptunium</div>
        </div>
        <div class="atomic-mass">(237)</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>32</li>
          <li>22</li>
          <li>9</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element actinoid c9 r10">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
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          <div class="orbital">
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            <div class="electron"></div>
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          <div class="orbital">
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            <div class="electron"></div>
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            <div class="electron"></div>
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          <div class="orbital">
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          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
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          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">94</div>
        <div class="label">
          <div class="symbol">Pu</div>
          <div class="name">Plutonium</div>
        </div>
        <div class="atomic-mass">(244)</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>32</li>
          <li>24</li>
          <li>8</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element actinoid c10 r10">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
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          <div class="orbital">
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            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
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          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">95</div>
        <div class="label">
          <div class="symbol">Am</div>
          <div class="name">Americium</div>
        </div>
        <div class="atomic-mass">(243)</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>32</li>
          <li>25</li>
          <li>8</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element actinoid c11 r10">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
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            <div class="electron"></div>
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          </div>
          <div class="orbital">
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          <div class="orbital">
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">96</div>
        <div class="label">
          <div class="symbol">Cm</div>
          <div class="name">Curium</div>
        </div>
        <div class="atomic-mass">(247)</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>32</li>
          <li>25</li>
          <li>9</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element actinoid c12 r10">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">97</div>
        <div class="label">
          <div class="symbol">Bk</div>
          <div class="name">Berkelium</div>
        </div>
        <div class="atomic-mass">(247)</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>32</li>
          <li>27</li>
          <li>8</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element actinoid c13 r10">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
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          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">98</div>
        <div class="label">
          <div class="symbol">Cf</div>
          <div class="name">Californium</div>
        </div>
        <div class="atomic-mass">(251)</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>32</li>
          <li>28</li>
          <li>8</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element actinoid c14 r10">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
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          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">99</div>
        <div class="label">
          <div class="symbol">Es</div>
          <div class="name">Einsteinium</div>
        </div>
        <div class="atomic-mass">(252)</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>32</li>
          <li>29</li>
          <li>8</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element actinoid c15 r10">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">100</div>
        <div class="label">
          <div class="symbol">Fm</div>
          <div class="name">Fermium</div>
        </div>
        <div class="atomic-mass">(257)</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>32</li>
          <li>30</li>
          <li>8</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element actinoid c16 r10">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">101</div>
        <div class="label">
          <div class="symbol">Md</div>
          <div class="name">Mendelevium</div>
        </div>
        <div class="atomic-mass">(258)</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>32</li>
          <li>31</li>
          <li>8</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element actinoid c17 r10">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">102</div>
        <div class="label">
          <div class="symbol">No</div>
          <div class="name">Nobelium</div>
        </div>
        <div class="atomic-mass">(259)</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>32</li>
          <li>32</li>
          <li>8</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element actinoid c18 r10">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">103</div>
        <div class="label">
          <div class="symbol">Lr</div>
          <div class="name">Lawrencium</div>
        </div>
        <div class="atomic-mass">(266)</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>32</li>
          <li>32</li>
          <li>8</li>
          <li>3</li>
        </ul>
      </div>
    </div>
    <div class="element transition-metal c4 r7">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">104</div>
        <div class="label">
          <div class="symbol">Rf</div>
          <div class="name">Rutherfordium</div>
        </div>
        <div class="atomic-mass">(267)</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>32</li>
          <li>32</li>
          <li>10</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element transition-metal c5 r7">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
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            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">105</div>
        <div class="label">
          <div class="symbol">Db</div>
          <div class="name">Dubnium</div>
        </div>
        <div class="atomic-mass">(268)</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>32</li>
          <li>32</li>
          <li>11</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element transition-metal c6 r7">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">106</div>
        <div class="label">
          <div class="symbol">Sg</div>
          <div class="name">Seaborgium</div>
        </div>
        <div class="atomic-mass">(269)</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>32</li>
          <li>32</li>
          <li>12</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element transition-metal c7 r7">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">107</div>
        <div class="label">
          <div class="symbol">Bh</div>
          <div class="name">Bohrium</div>
        </div>
        <div class="atomic-mass">(270)</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>32</li>
          <li>32</li>
          <li>13</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element transition-metal c8 r7">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">108</div>
        <div class="label">
          <div class="symbol">Hs</div>
          <div class="name">Hassium</div>
        </div>
        <div class="atomic-mass">(277)</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>32</li>
          <li>32</li>
          <li>14</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element unknown c9 r7">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">109</div>
        <div class="label">
          <div class="symbol">Mt</div>
          <div class="name">Meitnerium</div>
        </div>
        <div class="atomic-mass">(278)</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>32</li>
          <li>32</li>
          <li>15</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element unknown c10 r7">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">110</div>
        <div class="label">
          <div class="symbol">Ds</div>
          <div class="name">Darmstadtium</div>
        </div>
        <div class="atomic-mass">(281)</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>32</li>
          <li>32</li>
          <li>17</li>
          <li>1</li>
        </ul>
      </div>
    </div>
    <div class="element unknown c11 r7">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
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            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">111</div>
        <div class="label">
          <div class="symbol">Rg</div>
          <div class="name">Roentgenium</div>
        </div>
        <div class="atomic-mass">(282)</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>32</li>
          <li>32</li>
          <li>17</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element transition-metal c12 r7">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">112</div>
        <div class="label">
          <div class="symbol">Cn</div>
          <div class="name">Copernicium</div>
        </div>
        <div class="atomic-mass">(282)</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>32</li>
          <li>32</li>
          <li>18</li>
          <li>2</li>
        </ul>
      </div>
    </div>
    <div class="element unknown c13 r7">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">113</div>
        <div class="label">
          <div class="symbol">Nh</div>
          <div class="name">Nihonium</div>
        </div>
        <div class="atomic-mass">(286)</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>32</li>
          <li>32</li>
          <li>18</li>
          <li>3</li>
        </ul>
      </div>
    </div>
    <div class="element post-transition-metal c14 r7">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">114</div>
        <div class="label">
          <div class="symbol">Fl</div>
          <div class="name">Flerovium</div>
        </div>
        <div class="atomic-mass">(289)</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>32</li>
          <li>32</li>
          <li>18</li>
          <li>4</li>
        </ul>
      </div>
    </div>
    <div class="element unknown c15 r7">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">115</div>
        <div class="label">
          <div class="symbol">Mc</div>
          <div class="name">Moscovium</div>
        </div>
        <div class="atomic-mass">(290)</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>32</li>
          <li>32</li>
          <li>18</li>
          <li>5</li>
        </ul>
      </div>
    </div>
    <div class="element unknown c16 r7">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">116</div>
        <div class="label">
          <div class="symbol">Lv</div>
          <div class="name">Livermorium</div>
        </div>
        <div class="atomic-mass">(293)</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>32</li>
          <li>32</li>
          <li>18</li>
          <li>6</li>
        </ul>
      </div>
    </div>
    <div class="element unknown c17 r7">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
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            <div class="electron"></div>
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            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">117</div>
        <div class="label">
          <div class="symbol">Ts</div>
          <div class="name">Tennessine</div>
        </div>
        <div class="atomic-mass">(294)</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>32</li>
          <li>32</li>
          <li>18</li>
          <li>7</li>
        </ul>
      </div>
    </div>
    <div class="element unknown c18 r7">
      <input class="activate" type="radio" name="elements"/>
      <input class="deactivate" type="radio" name="elements"/>
      <div class="overlay"></div>
      <div class="square">
        <div class="model">
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
          <div class="orbital">
            <div class="electron"></div>
            <div class="electron"></div>
          </div>
        </div>
        <div class="atomic-number">118</div>
        <div class="label">
          <div class="symbol">Og</div>
          <div class="name">Oganesson</div>
        </div>
        <div class="atomic-mass">(294)</div>
        <ul class="atomic-weight">
          <li>2</li>
          <li>8</li>
          <li>18</li>
          <li>32</li>
          <li>32</li>
          <li>18</li>
          <li>8</li>
        </ul>
      </div>
    </div>
    <div class="placeholder lanthanoid c3 r6">
      <div class="square">57-71</div>
    </div>
    <div class="placeholder actinoid c3 r7">
      <div class="square">89-103</div>
    </div>
    <div class="gap c3 r8"></div>
    <div class="key">
      <div class="row">
        <label class="alkali-metal" for="alkali-metals">Alkali Metals</label>
        <label class="alkaline-earth-metal" for="alkaline-earth-metals">Alkaline Earth Metals</label>
        <label class="lanthanoid" for="lanthanoids">Lanthanoids</label>
        <label class="actinoid" for="actinoids">Aktinoids</label>
        <label class="transition-metal" for="transition-metals">Transition Metals</label>
        <label class="post-transition-metal" for="post-transition-metals">Post-Transition Metals</label>
        <label class="metalloid" for="metalloids">Metalloids</label>
        <label class="other-nonmetal" for="other-nonmetals">Other Nonmetals</label>
        <label class="noble-gas" for="noble-gasses">Noble Gasses</label>
        <label class="unknown" for="unknown">Unknown</label>
      </div>
    </div>
  </div>
</div>
</body>
</html>

CSS

Here is the complete code for style.css file to style the periodic table of chemistry elements:

/*****************IF YOU USE IT PLZ GIVE CREDIT TO JV CODES.*******************/
/* https://youtube.com/@jvcodes */
body {
  background: #0f1725;
  text-shadow: 0 0 0.4vw currentColor;
}

.wrapper {
  position: relative;
  overflow: hidden;
  padding: 6%;
}
.wrapper > input {
  -webkit-appearance: none;
  position: fixed;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
}

.periodic-table {
  display: grid;
  grid-gap: 5px;
  grid-template-columns: repeat(18, 1fr);
}

.element {
  position: relative;
  font-size: 0.5vw;
  padding-bottom: 100%;
  cursor: pointer;
  color: #fff;
  transition: 500ms;
}
.element .overlay {
    position: fixed;
    z-index: 1;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    background-color: #2c2f61;
    opacity: 0;
    pointer-events: none;
    transition: 500ms;
  }
  .element .square {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    border: 2px solid;
    box-sizing: border-box;
    background: #101318;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition-property: transform, z-index, left, right, top, bottom;
    transition-duration: 100ms, 0ms, 200ms, 200ms, 200ms, 200ms;
    transition-delay: 0ms, 100ms, 0ms, 0ms, 0ms, 0ms;
  }
  .element .atomic-number {
    position: absolute;
    left: 0;
    top: 0;
    padding: 2px;
  }
  .element .label {
    text-align: center;
    transition: 200ms;
  }
  .element .symbol {
    font-size: 1.7vw;
  }
  .element .name {
    font-size: 0.7vw;
  }
  .element .atomic-mass {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 2px;
    text-align: center;
  }
  .element .atomic-weight {
    position: absolute;
    right: 0;
    top: 0;
    list-style: none;
    margin: 0;
    padding: 2px;
    opacity: 0;
    transition: 200ms;
    text-align: right;
  }
  .element .model {
    display: none;
    position: absolute;
    left: -500%;
    right: -500%;
    top: -500%;
    bottom: -500%;
    transform: scale(0.1);
  }
  .element .model .orbital {
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    border: 5px solid;
    border-radius: 50%;
    opacity: 0.25;
  }
  .element .model .orbital:nth-child(1) {
    margin: 10%;
    animation-duration: 40s;
  }
  .element .model .orbital:nth-child(2) {
    margin: 15.5%;
    animation-duration: 34s;
  }
  .element .model .orbital:nth-child(3) {
    margin: 21%;
    animation-duration: 28s;
  }
  .element .model .orbital:nth-child(4) {
    margin: 26.5%;
    animation-duration: 22s;
  }
  .element .model .orbital:nth-child(5) {
    margin: 32%;
    animation-duration: 16s;
  }
  .element .model .orbital:nth-child(6) {
    margin: 37.5%;
    animation-duration: 10s;
  }
  .element .model .orbital:nth-child(7) {
    margin: 43%;
    animation-duration: 4s;
  }
  .element .model .orbital .electron {
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
  }
  .element .model .orbital .electron::before {
    content: "";
    position: absolute;
    left: calc(50% - 0.7vw);
    top: -0.7vw;
    width: 1.4vw;
    height: 1.4vw;
    background-color: currentColor;
    border-radius: 50%;
    opacity: 0.75;
  }
  .element .model .orbital .electron:nth-last-child(1):first-child ~ .electron:nth-child(1) {
    transform: rotate(0deg);
  }
  .element .model .orbital .electron:nth-last-child(2):first-child ~ .electron:nth-child(1) {
    transform: rotate(0deg);
  }
  .element .model .orbital .electron:nth-last-child(2):first-child ~ .electron:nth-child(2) {
    transform: rotate(180deg);
  }
  .element .model .orbital .electron:nth-last-child(3):first-child ~ .electron:nth-child(1) {
    transform: rotate(0deg);
  }
  .element .model .orbital .electron:nth-last-child(3):first-child ~ .electron:nth-child(2) {
    transform: rotate(120deg);
  }
  .element .model .orbital .electron:nth-last-child(3):first-child ~ .electron:nth-child(3) {
    transform: rotate(240deg);
  }
  .element .model .orbital .electron:nth-last-child(4):first-child ~ .electron:nth-child(1) {
    transform: rotate(0deg);
  }
  .element .model .orbital .electron:nth-last-child(4):first-child ~ .electron:nth-child(2) {
    transform: rotate(90deg);
  }
  .element .model .orbital .electron:nth-last-child(4):first-child ~ .electron:nth-child(3) {
    transform: rotate(180deg);
  }
  .element .model .orbital .electron:nth-last-child(4):first-child ~ .electron:nth-child(4) {
    transform: rotate(270deg);
  }
  .element .model .orbital .electron:nth-last-child(5):first-child ~ .electron:nth-child(1) {
    transform: rotate(0deg);
  }
  .element .model .orbital .electron:nth-last-child(5):first-child ~ .electron:nth-child(2) {
    transform: rotate(72deg);
  }
  .element .model .orbital .electron:nth-last-child(5):first-child ~ .electron:nth-child(3) {
    transform: rotate(144deg);
  }
  .element .model .orbital .electron:nth-last-child(5):first-child ~ .electron:nth-child(4) {
    transform: rotate(216deg);
  }
  .element .model .orbital .electron:nth-last-child(5):first-child ~ .electron:nth-child(5) {
    transform: rotate(288deg);
  }
  .element .model .orbital .electron:nth-last-child(6):first-child ~ .electron:nth-child(1) {
    transform: rotate(0deg);
  }
  .element .model .orbital .electron:nth-last-child(6):first-child ~ .electron:nth-child(2) {
    transform: rotate(60deg);
  }
  .element .model .orbital .electron:nth-last-child(6):first-child ~ .electron:nth-child(3) {
    transform: rotate(120deg);
  }
  .element .model .orbital .electron:nth-last-child(6):first-child ~ .electron:nth-child(4) {
    transform: rotate(180deg);
  }
  .element .model .orbital .electron:nth-last-child(6):first-child ~ .electron:nth-child(5) {
    transform: rotate(240deg);
  }
  .element .model .orbital .electron:nth-last-child(6):first-child ~ .electron:nth-child(6) {
    transform: rotate(300deg);
  }
  .element .model .orbital .electron:nth-last-child(7):first-child ~ .electron:nth-child(1) {
    transform: rotate(0deg);
  }
  .element .model .orbital .electron:nth-last-child(7):first-child ~ .electron:nth-child(2) {
    transform: rotate(51.4285714286deg);
  }
  .element .model .orbital .electron:nth-last-child(7):first-child ~ .electron:nth-child(3) {
    transform: rotate(102.8571428571deg);
  }
  .element .model .orbital .electron:nth-last-child(7):first-child ~ .electron:nth-child(4) {
    transform: rotate(154.2857142857deg);
  }
  .element .model .orbital .electron:nth-last-child(7):first-child ~ .electron:nth-child(5) {
    transform: rotate(205.7142857143deg);
  }
  .element .model .orbital .electron:nth-last-child(7):first-child ~ .electron:nth-child(6) {
    transform: rotate(257.1428571429deg);
  }
  .element .model .orbital .electron:nth-last-child(7):first-child ~ .electron:nth-child(7) {
    transform: rotate(308.5714285714deg);
  }
  .element .model .orbital .electron:nth-last-child(8):first-child ~ .electron:nth-child(1) {
    transform: rotate(0deg);
  }
  .element .model .orbital .electron:nth-last-child(8):first-child ~ .electron:nth-child(2) {
    transform: rotate(45deg);
  }
  .element .model .orbital .electron:nth-last-child(8):first-child ~ .electron:nth-child(3) {
    transform: rotate(90deg);
  }
  .element .model .orbital .electron:nth-last-child(8):first-child ~ .electron:nth-child(4) {
    transform: rotate(135deg);
  }
  .element .model .orbital .electron:nth-last-child(8):first-child ~ .electron:nth-child(5) {
    transform: rotate(180deg);
  }
  .element .model .orbital .electron:nth-last-child(8):first-child ~ .electron:nth-child(6) {
    transform: rotate(225deg);
  }
  .element .model .orbital .electron:nth-last-child(8):first-child ~ .electron:nth-child(7) {
    transform: rotate(270deg);
  }
  .element .model .orbital .electron:nth-last-child(8):first-child ~ .electron:nth-child(8) {
    transform: rotate(315deg);
  }
  .element .model .orbital .electron:nth-last-child(9):first-child ~ .electron:nth-child(1) {
    transform: rotate(0deg);
  }
  .element .model .orbital .electron:nth-last-child(9):first-child ~ .electron:nth-child(2) {
    transform: rotate(40deg);
  }
  .element .model .orbital .electron:nth-last-child(9):first-child ~ .electron:nth-child(3) {
    transform: rotate(80deg);
  }
  .element .model .orbital .electron:nth-last-child(9):first-child ~ .electron:nth-child(4) {
    transform: rotate(120deg);
  }
  .element .model .orbital .electron:nth-last-child(9):first-child ~ .electron:nth-child(5) {
    transform: rotate(160deg);
  }
  .element .model .orbital .electron:nth-last-child(9):first-child ~ .electron:nth-child(6) {
    transform: rotate(200deg);
  }
  .element .model .orbital .electron:nth-last-child(9):first-child ~ .electron:nth-child(7) {
    transform: rotate(240deg);
  }
  .element .model .orbital .electron:nth-last-child(9):first-child ~ .electron:nth-child(8) {
    transform: rotate(280deg);
  }
  .element .model .orbital .electron:nth-last-child(9):first-child ~ .electron:nth-child(9) {
    transform: rotate(320deg);
  }
  .element .model .orbital .electron:nth-last-child(10):first-child ~ .electron:nth-child(1) {
    transform: rotate(0deg);
  }
  .element .model .orbital .electron:nth-last-child(10):first-child ~ .electron:nth-child(2) {
    transform: rotate(36deg);
  }
  .element .model .orbital .electron:nth-last-child(10):first-child ~ .electron:nth-child(3) {
    transform: rotate(72deg);
  }
  .element .model .orbital .electron:nth-last-child(10):first-child ~ .electron:nth-child(4) {
    transform: rotate(108deg);
  }
  .element .model .orbital .electron:nth-last-child(10):first-child ~ .electron:nth-child(5) {
    transform: rotate(144deg);
  }
  .element .model .orbital .electron:nth-last-child(10):first-child ~ .electron:nth-child(6) {
    transform: rotate(180deg);
  }
  .element .model .orbital .electron:nth-last-child(10):first-child ~ .electron:nth-child(7) {
    transform: rotate(216deg);
  }
  .element .model .orbital .electron:nth-last-child(10):first-child ~ .electron:nth-child(8) {
    transform: rotate(252deg);
  }
  .element .model .orbital .electron:nth-last-child(10):first-child ~ .electron:nth-child(9) {
    transform: rotate(288deg);
  }
  .element .model .orbital .electron:nth-last-child(10):first-child ~ .electron:nth-child(10) {
    transform: rotate(324deg);
  }
  .element .model .orbital .electron:nth-last-child(11):first-child ~ .electron:nth-child(1) {
    transform: rotate(0deg);
  }
  .element .model .orbital .electron:nth-last-child(11):first-child ~ .electron:nth-child(2) {
    transform: rotate(32.7272727273deg);
  }
  .element .model .orbital .electron:nth-last-child(11):first-child ~ .electron:nth-child(3) {
    transform: rotate(65.4545454545deg);
  }
  .element .model .orbital .electron:nth-last-child(11):first-child ~ .electron:nth-child(4) {
    transform: rotate(98.1818181818deg);
  }
  .element .model .orbital .electron:nth-last-child(11):first-child ~ .electron:nth-child(5) {
    transform: rotate(130.9090909091deg);
  }
  .element .model .orbital .electron:nth-last-child(11):first-child ~ .electron:nth-child(6) {
    transform: rotate(163.6363636364deg);
  }
  .element .model .orbital .electron:nth-last-child(11):first-child ~ .electron:nth-child(7) {
    transform: rotate(196.3636363636deg);
  }
  .element .model .orbital .electron:nth-last-child(11):first-child ~ .electron:nth-child(8) {
    transform: rotate(229.0909090909deg);
  }
  .element .model .orbital .electron:nth-last-child(11):first-child ~ .electron:nth-child(9) {
    transform: rotate(261.8181818182deg);
  }
  .element .model .orbital .electron:nth-last-child(11):first-child ~ .electron:nth-child(10) {
    transform: rotate(294.5454545455deg);
  }
  .element .model .orbital .electron:nth-last-child(11):first-child ~ .electron:nth-child(11) {
    transform: rotate(327.2727272727deg);
  }
  .element .model .orbital .electron:nth-last-child(12):first-child ~ .electron:nth-child(1) {
    transform: rotate(0deg);
  }
  .element .model .orbital .electron:nth-last-child(12):first-child ~ .electron:nth-child(2) {
    transform: rotate(30deg);
  }
  .element .model .orbital .electron:nth-last-child(12):first-child ~ .electron:nth-child(3) {
    transform: rotate(60deg);
  }
  .element .model .orbital .electron:nth-last-child(12):first-child ~ .electron:nth-child(4) {
    transform: rotate(90deg);
  }
  .element .model .orbital .electron:nth-last-child(12):first-child ~ .electron:nth-child(5) {
    transform: rotate(120deg);
  }
  .element .model .orbital .electron:nth-last-child(12):first-child ~ .electron:nth-child(6) {
    transform: rotate(150deg);
  }
  .element .model .orbital .electron:nth-last-child(12):first-child ~ .electron:nth-child(7) {
    transform: rotate(180deg);
  }
  .element .model .orbital .electron:nth-last-child(12):first-child ~ .electron:nth-child(8) {
    transform: rotate(210deg);
  }
  .element .model .orbital .electron:nth-last-child(12):first-child ~ .electron:nth-child(9) {
    transform: rotate(240deg);
  }
  .element .model .orbital .electron:nth-last-child(12):first-child ~ .electron:nth-child(10) {
    transform: rotate(270deg);
  }
  .element .model .orbital .electron:nth-last-child(12):first-child ~ .electron:nth-child(11) {
    transform: rotate(300deg);
  }
  .element .model .orbital .electron:nth-last-child(12):first-child ~ .electron:nth-child(12) {
    transform: rotate(330deg);
  }
  .element .model .orbital .electron:nth-last-child(13):first-child ~ .electron:nth-child(1) {
    transform: rotate(0deg);
  }
  .element .model .orbital .electron:nth-last-child(13):first-child ~ .electron:nth-child(2) {
    transform: rotate(27.6923076923deg);
  }
  .element .model .orbital .electron:nth-last-child(13):first-child ~ .electron:nth-child(3) {
    transform: rotate(55.3846153846deg);
  }
  .element .model .orbital .electron:nth-last-child(13):first-child ~ .electron:nth-child(4) {
    transform: rotate(83.0769230769deg);
  }
.element .model .orbital .electron:nth-last-child(13):first-child ~ .electron:nth-child(5) {
  transform: rotate(110.7692307692deg);
}
.element .model .orbital .electron:nth-last-child(13):first-child ~ .electron:nth-child(6) {
  transform: rotate(138.4615384615deg);
}
.element .model .orbital .electron:nth-last-child(13):first-child ~ .electron:nth-child(7) {
  transform: rotate(166.1538461538deg);
}
.element .model .orbital .electron:nth-last-child(13):first-child ~ .electron:nth-child(8) {
    transform: rotate(193.8461538462deg);
  }
  .element .model .orbital .electron:nth-last-child(13):first-child ~ .electron:nth-child(9) {
    transform: rotate(221.5384615385deg);
  }
  .element .model .orbital .electron:nth-last-child(13):first-child ~ .electron:nth-child(10) {
    transform: rotate(249.2307692308deg);
  }
  .element .model .orbital .electron:nth-last-child(13):first-child ~ .electron:nth-child(11) {
    transform: rotate(276.9230769231deg);
  }
  .element .model .orbital .electron:nth-last-child(13):first-child ~ .electron:nth-child(12) {
    transform: rotate(304.6153846154deg);
  }
  .element .model .orbital .electron:nth-last-child(13):first-child ~ .electron:nth-child(13) {
    transform: rotate(332.3076923077deg);
  }
  .element .model .orbital .electron:nth-last-child(14):first-child ~ .electron:nth-child(1) {
    transform: rotate(0deg);
  }
  .element .model .orbital .electron:nth-last-child(14):first-child ~ .electron:nth-child(2) {
    transform: rotate(25.7142857143deg);
  }
  .element .model .orbital .electron:nth-last-child(14):first-child ~ .electron:nth-child(3) {
    transform: rotate(51.4285714286deg);
  }
  .element .model .orbital .electron:nth-last-child(14):first-child ~ .electron:nth-child(4) {
    transform: rotate(77.1428571429deg);
  }
  .element .model .orbital .electron:nth-last-child(14):first-child ~ .electron:nth-child(5) {
    transform: rotate(102.8571428571deg);
  }
  .element .model .orbital .electron:nth-last-child(14):first-child ~ .electron:nth-child(6) {
    transform: rotate(128.5714285714deg);
  }
  .element .model .orbital .electron:nth-last-child(14):first-child ~ .electron:nth-child(7) {
    transform: rotate(154.2857142857deg);
  }
  .element .model .orbital .electron:nth-last-child(14):first-child ~ .electron:nth-child(8) {
    transform: rotate(180deg);
  }
  .element .model .orbital .electron:nth-last-child(14):first-child ~ .electron:nth-child(9) {
    transform: rotate(205.7142857143deg);
  }
  .element .model .orbital .electron:nth-last-child(14):first-child ~ .electron:nth-child(10) {
    transform: rotate(231.4285714286deg);
  }
  .element .model .orbital .electron:nth-last-child(14):first-child ~ .electron:nth-child(11) {
    transform: rotate(257.1428571429deg);
  }
  .element .model .orbital .electron:nth-last-child(14):first-child ~ .electron:nth-child(12) {
    transform: rotate(282.8571428571deg);
  }
  .element .model .orbital .electron:nth-last-child(14):first-child ~ .electron:nth-child(13) {
    transform: rotate(308.5714285714deg);
  }
  .element .model .orbital .electron:nth-last-child(14):first-child ~ .electron:nth-child(14) {
    transform: rotate(334.2857142857deg);
  }
  .element .model .orbital .electron:nth-last-child(15):first-child ~ .electron:nth-child(1) {
    transform: rotate(0deg);
  }
  .element .model .orbital .electron:nth-last-child(15):first-child ~ .electron:nth-child(2) {
    transform: rotate(24deg);
  }
  .element .model .orbital .electron:nth-last-child(15):first-child ~ .electron:nth-child(3) {
    transform: rotate(48deg);
  }
  .element .model .orbital .electron:nth-last-child(15):first-child ~ .electron:nth-child(4) {
    transform: rotate(72deg);
  }
  .element .model .orbital .electron:nth-last-child(15):first-child ~ .electron:nth-child(5) {
    transform: rotate(96deg);
  }
  .element .model .orbital .electron:nth-last-child(15):first-child ~ .electron:nth-child(6) {
    transform: rotate(120deg);
  }
  .element .model .orbital .electron:nth-last-child(15):first-child ~ .electron:nth-child(7) {
    transform: rotate(144deg);
  }
  .element .model .orbital .electron:nth-last-child(15):first-child ~ .electron:nth-child(8) {
    transform: rotate(168deg);
  }
  .element .model .orbital .electron:nth-last-child(15):first-child ~ .electron:nth-child(9) {
    transform: rotate(192deg);
  }
  .element .model .orbital .electron:nth-last-child(15):first-child ~ .electron:nth-child(10) {
    transform: rotate(216deg);
  }
  .element .model .orbital .electron:nth-last-child(15):first-child ~ .electron:nth-child(11) {
    transform: rotate(240deg);
  }
  .element .model .orbital .electron:nth-last-child(15):first-child ~ .electron:nth-child(12) {
    transform: rotate(264deg);
  }
  .element .model .orbital .electron:nth-last-child(15):first-child ~ .electron:nth-child(13) {
    transform: rotate(288deg);
  }
  .element .model .orbital .electron:nth-last-child(15):first-child ~ .electron:nth-child(14) {
    transform: rotate(312deg);
  }
  .element .model .orbital .electron:nth-last-child(15):first-child ~ .electron:nth-child(15) {
    transform: rotate(336deg);
  }
  .element .model .orbital .electron:nth-last-child(16):first-child ~ .electron:nth-child(1) {
    transform: rotate(0deg);
  }
  .element .model .orbital .electron:nth-last-child(16):first-child ~ .electron:nth-child(2) {
    transform: rotate(22.5deg);
  }
  .element .model .orbital .electron:nth-last-child(16):first-child ~ .electron:nth-child(3) {
    transform: rotate(45deg);
  }
  .element .model .orbital .electron:nth-last-child(16):first-child ~ .electron:nth-child(4) {
    transform: rotate(67.5deg);
  }
  .element .model .orbital .electron:nth-last-child(16):first-child ~ .electron:nth-child(5) {
    transform: rotate(90deg);
  }
  .element .model .orbital .electron:nth-last-child(16):first-child ~ .electron:nth-child(6) {
    transform: rotate(112.5deg);
  }
  .element .model .orbital .electron:nth-last-child(16):first-child ~ .electron:nth-child(7) {
    transform: rotate(135deg);
  }
  .element .model .orbital .electron:nth-last-child(16):first-child ~ .electron:nth-child(8) {
    transform: rotate(157.5deg);
  }
  .element .model .orbital .electron:nth-last-child(16):first-child ~ .electron:nth-child(9) {
    transform: rotate(180deg);
  }
  .element .model .orbital .electron:nth-last-child(16):first-child ~ .electron:nth-child(10) {
    transform: rotate(202.5deg);
  }
  .element .model .orbital .electron:nth-last-child(16):first-child ~ .electron:nth-child(11) {
    transform: rotate(225deg);
  }
  .element .model .orbital .electron:nth-last-child(16):first-child ~ .electron:nth-child(12) {
    transform: rotate(247.5deg);
  }
  .element .model .orbital .electron:nth-last-child(16):first-child ~ .electron:nth-child(13) {
    transform: rotate(270deg);
  }
  .element .model .orbital .electron:nth-last-child(16):first-child ~ .electron:nth-child(14) {
    transform: rotate(292.5deg);
  }
  .element .model .orbital .electron:nth-last-child(16):first-child ~ .electron:nth-child(15) {
    transform: rotate(315deg);
  }
  .element .model .orbital .electron:nth-last-child(16):first-child ~ .electron:nth-child(16) {
    transform: rotate(337.5deg);
  }
  .element .model .orbital .electron:nth-last-child(17):first-child ~ .electron:nth-child(1) {
    transform: rotate(0deg);
  }
  .element .model .orbital .electron:nth-last-child(17):first-child ~ .electron:nth-child(2) {
    transform: rotate(21.1764705882deg);
  }
  .element .model .orbital .electron:nth-last-child(17):first-child ~ .electron:nth-child(3) {
    transform: rotate(42.3529411765deg);
  }
  .element .model .orbital .electron:nth-last-child(17):first-child ~ .electron:nth-child(4) {
    transform: rotate(63.5294117647deg);
  }
  .element .model .orbital .electron:nth-last-child(17):first-child ~ .electron:nth-child(5) {
    transform: rotate(84.7058823529deg);
  }
  .element .model .orbital .electron:nth-last-child(17):first-child ~ .electron:nth-child(6) {
    transform: rotate(105.8823529412deg);
  }
  .element .model .orbital .electron:nth-last-child(17):first-child ~ .electron:nth-child(7) {
    transform: rotate(127.0588235294deg);
  }
  .element .model .orbital .electron:nth-last-child(17):first-child ~ .electron:nth-child(8) {
    transform: rotate(148.2352941176deg);
  }
  .element .model .orbital .electron:nth-last-child(17):first-child ~ .electron:nth-child(9) {
    transform: rotate(169.4117647059deg);
  }
  .element .model .orbital .electron:nth-last-child(17):first-child ~ .electron:nth-child(10) {
    transform: rotate(190.5882352941deg);
  }
  .element .model .orbital .electron:nth-last-child(17):first-child ~ .electron:nth-child(11) {
    transform: rotate(211.7647058824deg);
  }
  .element .model .orbital .electron:nth-last-child(17):first-child ~ .electron:nth-child(12) {
    transform: rotate(232.9411764706deg);
  }
  .element .model .orbital .electron:nth-last-child(17):first-child ~ .electron:nth-child(13) {
    transform: rotate(254.1176470588deg);
  }
  .element .model .orbital .electron:nth-last-child(17):first-child ~ .electron:nth-child(14) {
    transform: rotate(275.2941176471deg);
  }
  .element .model .orbital .electron:nth-last-child(17):first-child ~ .electron:nth-child(15) {
    transform: rotate(296.4705882353deg);
  }
  .element .model .orbital .electron:nth-last-child(17):first-child ~ .electron:nth-child(16) {
    transform: rotate(317.6470588235deg);
  }
  .element .model .orbital .electron:nth-last-child(17):first-child ~ .electron:nth-child(17) {
    transform: rotate(338.8235294118deg);
  }
  .element .model .orbital .electron:nth-last-child(18):first-child ~ .electron:nth-child(1) {
    transform: rotate(0deg);
  }
  .element .model .orbital .electron:nth-last-child(18):first-child ~ .electron:nth-child(2) {
    transform: rotate(20deg);
  }
  .element .model .orbital .electron:nth-last-child(18):first-child ~ .electron:nth-child(3) {
    transform: rotate(40deg);
  }
  .element .model .orbital .electron:nth-last-child(18):first-child ~ .electron:nth-child(4) {
    transform: rotate(60deg);
  }
  .element .model .orbital .electron:nth-last-child(18):first-child ~ .electron:nth-child(5) {
    transform: rotate(80deg);
  }
  .element .model .orbital .electron:nth-last-child(18):first-child ~ .electron:nth-child(6) {
    transform: rotate(100deg);
  }
  .element .model .orbital .electron:nth-last-child(18):first-child ~ .electron:nth-child(7) {
    transform: rotate(120deg);
  }
  .element .model .orbital .electron:nth-last-child(18):first-child ~ .electron:nth-child(8) {
    transform: rotate(140deg);
  }
  .element .model .orbital .electron:nth-last-child(18):first-child ~ .electron:nth-child(9) {
    transform: rotate(160deg);
  }
  .element .model .orbital .electron:nth-last-child(18):first-child ~ .electron:nth-child(10) {
    transform: rotate(180deg);
  }
  .element .model .orbital .electron:nth-last-child(18):first-child ~ .electron:nth-child(11) {
    transform: rotate(200deg);
  }
  .element .model .orbital .electron:nth-last-child(18):first-child ~ .electron:nth-child(12) {
    transform: rotate(220deg);
  }
  .element .model .orbital .electron:nth-last-child(18):first-child ~ .electron:nth-child(13) {
    transform: rotate(240deg);
  }
  .element .model .orbital .electron:nth-last-child(18):first-child ~ .electron:nth-child(14) {
    transform: rotate(260deg);
  }
  .element .model .orbital .electron:nth-last-child(18):first-child ~ .electron:nth-child(15) {
    transform: rotate(280deg);
  }
  .element .model .orbital .electron:nth-last-child(18):first-child ~ .electron:nth-child(16) {
    transform: rotate(300deg);
  }
  .element .model .orbital .electron:nth-last-child(18):first-child ~ .electron:nth-child(17) {
    transform: rotate(320deg);
  }
  .element .model .orbital .electron:nth-last-child(18):first-child ~ .electron:nth-child(18) {
    transform: rotate(340deg);
  }
  .element .model .orbital .electron:nth-last-child(19):first-child ~ .electron:nth-child(1) {
    transform: rotate(0deg);
  }
  .element .model .orbital .electron:nth-last-child(19):first-child ~ .electron:nth-child(2) {
    transform: rotate(18.9473684211deg);
  }
  .element .model .orbital .electron:nth-last-child(19):first-child ~ .electron:nth-child(3) {
    transform: rotate(37.8947368421deg);
  }
  .element .model .orbital .electron:nth-last-child(19):first-child ~ .electron:nth-child(4) {
    transform: rotate(56.8421052632deg);
  }
  .element .model .orbital .electron:nth-last-child(19):first-child ~ .electron:nth-child(5) {
    transform: rotate(75.7894736842deg);
  }
  .element .model .orbital .electron:nth-last-child(19):first-child ~ .electron:nth-child(6) {
    transform: rotate(94.7368421053deg);
  }
  .element .model .orbital .electron:nth-last-child(19):first-child ~ .electron:nth-child(7) {
    transform: rotate(113.6842105263deg);
  }
  .element .model .orbital .electron:nth-last-child(19):first-child ~ .electron:nth-child(8) {
    transform: rotate(132.6315789474deg);
  }
  .element .model .orbital .electron:nth-last-child(19):first-child ~ .electron:nth-child(9) {
    transform: rotate(151.5789473684deg);
  }
  .element .model .orbital .electron:nth-last-child(19):first-child ~ .electron:nth-child(10) {
    transform: rotate(170.5263157895deg);
  }
  .element .model .orbital .electron:nth-last-child(19):first-child ~ .electron:nth-child(11) {
    transform: rotate(189.4736842105deg);
  }
  .element .model .orbital .electron:nth-last-child(19):first-child ~ .electron:nth-child(12) {
    transform: rotate(208.4210526316deg);
  }
  .element .model .orbital .electron:nth-last-child(19):first-child ~ .electron:nth-child(13) {
    transform: rotate(227.3684210526deg);
  }
  .element .model .orbital .electron:nth-last-child(19):first-child ~ .electron:nth-child(14) {
    transform: rotate(246.3157894737deg);
  }
  .element .model .orbital .electron:nth-last-child(19):first-child ~ .electron:nth-child(15) {
    transform: rotate(265.2631578947deg);
  }
  .element .model .orbital .electron:nth-last-child(19):first-child ~ .electron:nth-child(16) {
    transform: rotate(284.2105263158deg);
  }
  .element .model .orbital .electron:nth-last-child(19):first-child ~ .electron:nth-child(17) {
    transform: rotate(303.1578947368deg);
  }
  .element .model .orbital .electron:nth-last-child(19):first-child ~ .electron:nth-child(18) {
    transform: rotate(322.1052631579deg);
  }
  .element .model .orbital .electron:nth-last-child(19):first-child ~ .electron:nth-child(19) {
    transform: rotate(341.0526315789deg);
  }
  .element .model .orbital .electron:nth-last-child(20):first-child ~ .electron:nth-child(1) {
    transform: rotate(0deg);
  }
  .element .model .orbital .electron:nth-last-child(20):first-child ~ .electron:nth-child(2) {
    transform: rotate(18deg);
  }
  .element .model .orbital .electron:nth-last-child(20):first-child ~ .electron:nth-child(3) {
    transform: rotate(36deg);
  }
  .element .model .orbital .electron:nth-last-child(20):first-child ~ .electron:nth-child(4) {
    transform: rotate(54deg);
  }
  .element .model .orbital .electron:nth-last-child(20):first-child ~ .electron:nth-child(5) {
    transform: rotate(72deg);
  }
  .element .model .orbital .electron:nth-last-child(20):first-child ~ .electron:nth-child(6) {
    transform: rotate(90deg);
  }
  .element .model .orbital .electron:nth-last-child(20):first-child ~ .electron:nth-child(7) {
    transform: rotate(108deg);
  }
  .element .model .orbital .electron:nth-last-child(20):first-child ~ .electron:nth-child(8) {
    transform: rotate(126deg);
  }
  .element .model .orbital .electron:nth-last-child(20):first-child ~ .electron:nth-child(9) {
    transform: rotate(144deg);
  }
  .element .model .orbital .electron:nth-last-child(20):first-child ~ .electron:nth-child(10) {
    transform: rotate(162deg);
  }
  .element .model .orbital .electron:nth-last-child(20):first-child ~ .electron:nth-child(11) {
    transform: rotate(180deg);
  }
  .element .model .orbital .electron:nth-last-child(20):first-child ~ .electron:nth-child(12) {
    transform: rotate(198deg);
  }
  .element .model .orbital .electron:nth-last-child(20):first-child ~ .electron:nth-child(13) {
    transform: rotate(216deg);
  }
  .element .model .orbital .electron:nth-last-child(20):first-child ~ .electron:nth-child(14) {
    transform: rotate(234deg);
  }
  .element .model .orbital .electron:nth-last-child(20):first-child ~ .electron:nth-child(15) {
    transform: rotate(252deg);
  }
  .element .model .orbital .electron:nth-last-child(20):first-child ~ .electron:nth-child(16) {
    transform: rotate(270deg);
  }
  .element .model .orbital .electron:nth-last-child(20):first-child ~ .electron:nth-child(17) {
    transform: rotate(288deg);
  }
  .element .model .orbital .electron:nth-last-child(20):first-child ~ .electron:nth-child(18) {
    transform: rotate(306deg);
  }
  .element .model .orbital .electron:nth-last-child(20):first-child ~ .electron:nth-child(19) {
    transform: rotate(324deg);
  }
  .element .model .orbital .electron:nth-last-child(20):first-child ~ .electron:nth-child(20) {
    transform: rotate(342deg);
  }
  .element .model .orbital .electron:nth-last-child(21):first-child ~ .electron:nth-child(1) {
    transform: rotate(0deg);
  }
  .element .model .orbital .electron:nth-last-child(21):first-child ~ .electron:nth-child(2) {
    transform: rotate(17.1428571429deg);
  }
  .element .model .orbital .electron:nth-last-child(21):first-child ~ .electron:nth-child(3) {
    transform: rotate(34.2857142857deg);
  }
  .element .model .orbital .electron:nth-last-child(21):first-child ~ .electron:nth-child(4) {
    transform: rotate(51.4285714286deg);
  }
  .element .model .orbital .electron:nth-last-child(21):first-child ~ .electron:nth-child(5) {
    transform: rotate(68.5714285714deg);
  }
  .element .model .orbital .electron:nth-last-child(21):first-child ~ .electron:nth-child(6) {
    transform: rotate(85.7142857143deg);
  }
  .element .model .orbital .electron:nth-last-child(21):first-child ~ .electron:nth-child(7) {
    transform: rotate(102.8571428571deg);
  }
  .element .model .orbital .electron:nth-last-child(21):first-child ~ .electron:nth-child(8) {
    transform: rotate(120deg);
  }
  .element .model .orbital .electron:nth-last-child(21):first-child ~ .electron:nth-child(9) {
    transform: rotate(137.1428571429deg);
  }
  .element .model .orbital .electron:nth-last-child(21):first-child ~ .electron:nth-child(10) {
    transform: rotate(154.2857142857deg);
  }
  .element .model .orbital .electron:nth-last-child(21):first-child ~ .electron:nth-child(11) {
    transform: rotate(171.4285714286deg);
  }
  .element .model .orbital .electron:nth-last-child(21):first-child ~ .electron:nth-child(12) {
    transform: rotate(188.5714285714deg);
  }
  .element .model .orbital .electron:nth-last-child(21):first-child ~ .electron:nth-child(13) {
    transform: rotate(205.7142857143deg);
  }
  .element .model .orbital .electron:nth-last-child(21):first-child ~ .electron:nth-child(14) {
    transform: rotate(222.8571428571deg);
  }
  .element .model .orbital .electron:nth-last-child(21):first-child ~ .electron:nth-child(15) {
    transform: rotate(240deg);
  }
  .element .model .orbital .electron:nth-last-child(21):first-child ~ .electron:nth-child(16) {
    transform: rotate(257.1428571429deg);
  }
  .element .model .orbital .electron:nth-last-child(21):first-child ~ .electron:nth-child(17) {
    transform: rotate(274.2857142857deg);
  }
  .element .model .orbital .electron:nth-last-child(21):first-child ~ .electron:nth-child(18) {
    transform: rotate(291.4285714286deg);
  }
  .element .model .orbital .electron:nth-last-child(21):first-child ~ .electron:nth-child(19) {
    transform: rotate(308.5714285714deg);
  }
  .element .model .orbital .electron:nth-last-child(21):first-child ~ .electron:nth-child(20) {
    transform: rotate(325.7142857143deg);
  }
  .element .model .orbital .electron:nth-last-child(21):first-child ~ .electron:nth-child(21) {
    transform: rotate(342.8571428571deg);
  }
  .element .model .orbital .electron:nth-last-child(22):first-child ~ .electron:nth-child(1) {
    transform: rotate(0deg);
  }
  .element .model .orbital .electron:nth-last-child(22):first-child ~ .electron:nth-child(2) {
    transform: rotate(16.3636363636deg);
  }
  .element .model .orbital .electron:nth-last-child(22):first-child ~ .electron:nth-child(3) {
    transform: rotate(32.7272727273deg);
  }
  .element .model .orbital .electron:nth-last-child(22):first-child ~ .electron:nth-child(4) {
    transform: rotate(49.0909090909deg);
  }
  .element .model .orbital .electron:nth-last-child(22):first-child ~ .electron:nth-child(5) {
    transform: rotate(65.4545454545deg);
  }
  .element .model .orbital .electron:nth-last-child(22):first-child ~ .electron:nth-child(6) {
    transform: rotate(81.8181818182deg);
  }
  .element .model .orbital .electron:nth-last-child(22):first-child ~ .electron:nth-child(7) {
    transform: rotate(98.1818181818deg);
  }
  .element .model .orbital .electron:nth-last-child(22):first-child ~ .electron:nth-child(8) {
    transform: rotate(114.5454545455deg);
  }
  .element .model .orbital .electron:nth-last-child(22):first-child ~ .electron:nth-child(9) {
    transform: rotate(130.9090909091deg);
  }
  .element .model .orbital .electron:nth-last-child(22):first-child ~ .electron:nth-child(10) {
    transform: rotate(147.2727272727deg);
  }
  .element .model .orbital .electron:nth-last-child(22):first-child ~ .electron:nth-child(11) {
    transform: rotate(163.6363636364deg);
  }
  .element .model .orbital .electron:nth-last-child(22):first-child ~ .electron:nth-child(12) {
    transform: rotate(180deg);
  }
  .element .model .orbital .electron:nth-last-child(22):first-child ~ .electron:nth-child(13) {
    transform: rotate(196.3636363636deg);
  }
.element .model .orbital .electron:nth-last-child(22):first-child ~ .electron:nth-child(14) {
  transform: rotate(212.7272727273deg);
}
.element .model .orbital .electron:nth-last-child(22):first-child ~ .electron:nth-child(15) {
  transform: rotate(229.0909090909deg);
}
.element .model .orbital .electron:nth-last-child(22):first-child ~ .electron:nth-child(16) {
    transform: rotate(245.4545454545deg);
  }
  .element .model .orbital .electron:nth-last-child(22):first-child ~ .electron:nth-child(17) {
    transform: rotate(261.8181818182deg);
  }
  .element .model .orbital .electron:nth-last-child(22):first-child ~ .electron:nth-child(18) {
    transform: rotate(278.1818181818deg);
  }
  .element .model .orbital .electron:nth-last-child(22):first-child ~ .electron:nth-child(19) {
    transform: rotate(294.5454545455deg);
  }
  .element .model .orbital .electron:nth-last-child(22):first-child ~ .electron:nth-child(20) {
    transform: rotate(310.9090909091deg);
  }
  .element .model .orbital .electron:nth-last-child(22):first-child ~ .electron:nth-child(21) {
    transform: rotate(327.2727272727deg);
  }
  .element .model .orbital .electron:nth-last-child(22):first-child ~ .electron:nth-child(22) {
    transform: rotate(343.6363636364deg);
  }
  .element .model .orbital .electron:nth-last-child(23):first-child ~ .electron:nth-child(1) {
    transform: rotate(0deg);
  }
  .element .model .orbital .electron:nth-last-child(23):first-child ~ .electron:nth-child(2) {
    transform: rotate(15.652173913deg);
  }
  .element .model .orbital .electron:nth-last-child(23):first-child ~ .electron:nth-child(3) {
    transform: rotate(31.3043478261deg);
  }
  .element .model .orbital .electron:nth-last-child(23):first-child ~ .electron:nth-child(4) {
    transform: rotate(46.9565217391deg);
  }
  .element .model .orbital .electron:nth-last-child(23):first-child ~ .electron:nth-child(5) {
    transform: rotate(62.6086956522deg);
  }
  .element .model .orbital .electron:nth-last-child(23):first-child ~ .electron:nth-child(6) {
    transform: rotate(78.2608695652deg);
  }
  .element .model .orbital .electron:nth-last-child(23):first-child ~ .electron:nth-child(7) {
    transform: rotate(93.9130434783deg);
  }
  .element .model .orbital .electron:nth-last-child(23):first-child ~ .electron:nth-child(8) {
    transform: rotate(109.5652173913deg);
  }
  .element .model .orbital .electron:nth-last-child(23):first-child ~ .electron:nth-child(9) {
    transform: rotate(125.2173913043deg);
  }
  .element .model .orbital .electron:nth-last-child(23):first-child ~ .electron:nth-child(10) {
    transform: rotate(140.8695652174deg);
  }
  .element .model .orbital .electron:nth-last-child(23):first-child ~ .electron:nth-child(11) {
    transform: rotate(156.5217391304deg);
  }
  .element .model .orbital .electron:nth-last-child(23):first-child ~ .electron:nth-child(12) {
    transform: rotate(172.1739130435deg);
  }
  .element .model .orbital .electron:nth-last-child(23):first-child ~ .electron:nth-child(13) {
    transform: rotate(187.8260869565deg);
  }
  .element .model .orbital .electron:nth-last-child(23):first-child ~ .electron:nth-child(14) {
    transform: rotate(203.4782608696deg);
  }
  .element .model .orbital .electron:nth-last-child(23):first-child ~ .electron:nth-child(15) {
    transform: rotate(219.1304347826deg);
  }
  .element .model .orbital .electron:nth-last-child(23):first-child ~ .electron:nth-child(16) {
    transform: rotate(234.7826086957deg);
  }
  .element .model .orbital .electron:nth-last-child(23):first-child ~ .electron:nth-child(17) {
    transform: rotate(250.4347826087deg);
  }
  .element .model .orbital .electron:nth-last-child(23):first-child ~ .electron:nth-child(18) {
    transform: rotate(266.0869565217deg);
  }
  .element .model .orbital .electron:nth-last-child(23):first-child ~ .electron:nth-child(19) {
    transform: rotate(281.7391304348deg);
  }
  .element .model .orbital .electron:nth-last-child(23):first-child ~ .electron:nth-child(20) {
    transform: rotate(297.3913043478deg);
  }
  .element .model .orbital .electron:nth-last-child(23):first-child ~ .electron:nth-child(21) {
    transform: rotate(313.0434782609deg);
  }
  .element .model .orbital .electron:nth-last-child(23):first-child ~ .electron:nth-child(22) {
    transform: rotate(328.6956521739deg);
  }
  .element .model .orbital .electron:nth-last-child(23):first-child ~ .electron:nth-child(23) {
    transform: rotate(344.347826087deg);
  }
  .element .model .orbital .electron:nth-last-child(24):first-child ~ .electron:nth-child(1) {
    transform: rotate(0deg);
  }
  .element .model .orbital .electron:nth-last-child(24):first-child ~ .electron:nth-child(2) {
    transform: rotate(15deg);
  }
  .element .model .orbital .electron:nth-last-child(24):first-child ~ .electron:nth-child(3) {
    transform: rotate(30deg);
  }
  .element .model .orbital .electron:nth-last-child(24):first-child ~ .electron:nth-child(4) {
    transform: rotate(45deg);
  }
  .element .model .orbital .electron:nth-last-child(24):first-child ~ .electron:nth-child(5) {
    transform: rotate(60deg);
  }
  .element .model .orbital .electron:nth-last-child(24):first-child ~ .electron:nth-child(6) {
    transform: rotate(75deg);
  }
  .element .model .orbital .electron:nth-last-child(24):first-child ~ .electron:nth-child(7) {
    transform: rotate(90deg);
  }
  .element .model .orbital .electron:nth-last-child(24):first-child ~ .electron:nth-child(8) {
    transform: rotate(105deg);
  }
  .element .model .orbital .electron:nth-last-child(24):first-child ~ .electron:nth-child(9) {
    transform: rotate(120deg);
  }
  .element .model .orbital .electron:nth-last-child(24):first-child ~ .electron:nth-child(10) {
    transform: rotate(135deg);
  }
  .element .model .orbital .electron:nth-last-child(24):first-child ~ .electron:nth-child(11) {
    transform: rotate(150deg);
  }
  .element .model .orbital .electron:nth-last-child(24):first-child ~ .electron:nth-child(12) {
    transform: rotate(165deg);
  }
  .element .model .orbital .electron:nth-last-child(24):first-child ~ .electron:nth-child(13) {
    transform: rotate(180deg);
  }
  .element .model .orbital .electron:nth-last-child(24):first-child ~ .electron:nth-child(14) {
    transform: rotate(195deg);
  }
  .element .model .orbital .electron:nth-last-child(24):first-child ~ .electron:nth-child(15) {
    transform: rotate(210deg);
  }
  .element .model .orbital .electron:nth-last-child(24):first-child ~ .electron:nth-child(16) {
    transform: rotate(225deg);
  }
  .element .model .orbital .electron:nth-last-child(24):first-child ~ .electron:nth-child(17) {
    transform: rotate(240deg);
  }
  .element .model .orbital .electron:nth-last-child(24):first-child ~ .electron:nth-child(18) {
    transform: rotate(255deg);
  }
  .element .model .orbital .electron:nth-last-child(24):first-child ~ .electron:nth-child(19) {
    transform: rotate(270deg);
  }
  .element .model .orbital .electron:nth-last-child(24):first-child ~ .electron:nth-child(20) {
    transform: rotate(285deg);
  }
  .element .model .orbital .electron:nth-last-child(24):first-child ~ .electron:nth-child(21) {
    transform: rotate(300deg);
  }
  .element .model .orbital .electron:nth-last-child(24):first-child ~ .electron:nth-child(22) {
    transform: rotate(315deg);
  }
  .element .model .orbital .electron:nth-last-child(24):first-child ~ .electron:nth-child(23) {
    transform: rotate(330deg);
  }
  .element .model .orbital .electron:nth-last-child(24):first-child ~ .electron:nth-child(24) {
    transform: rotate(345deg);
  }
  .element .model .orbital .electron:nth-last-child(25):first-child ~ .electron:nth-child(1) {
    transform: rotate(0deg);
  }
  .element .model .orbital .electron:nth-last-child(25):first-child ~ .electron:nth-child(2) {
    transform: rotate(14.4deg);
  }
  .element .model .orbital .electron:nth-last-child(25):first-child ~ .electron:nth-child(3) {
    transform: rotate(28.8deg);
  }
  .element .model .orbital .electron:nth-last-child(25):first-child ~ .electron:nth-child(4) {
    transform: rotate(43.2deg);
  }
  .element .model .orbital .electron:nth-last-child(25):first-child ~ .electron:nth-child(5) {
    transform: rotate(57.6deg);
  }
  .element .model .orbital .electron:nth-last-child(25):first-child ~ .electron:nth-child(6) {
    transform: rotate(72deg);
  }
  .element .model .orbital .electron:nth-last-child(25):first-child ~ .electron:nth-child(7) {
    transform: rotate(86.4deg);
  }
  .element .model .orbital .electron:nth-last-child(25):first-child ~ .electron:nth-child(8) {
    transform: rotate(100.8deg);
  }
  .element .model .orbital .electron:nth-last-child(25):first-child ~ .electron:nth-child(9) {
    transform: rotate(115.2deg);
  }
  .element .model .orbital .electron:nth-last-child(25):first-child ~ .electron:nth-child(10) {
    transform: rotate(129.6deg);
  }
  .element .model .orbital .electron:nth-last-child(25):first-child ~ .electron:nth-child(11) {
    transform: rotate(144deg);
  }
  .element .model .orbital .electron:nth-last-child(25):first-child ~ .electron:nth-child(12) {
    transform: rotate(158.4deg);
  }
  .element .model .orbital .electron:nth-last-child(25):first-child ~ .electron:nth-child(13) {
    transform: rotate(172.8deg);
  }
  .element .model .orbital .electron:nth-last-child(25):first-child ~ .electron:nth-child(14) {
    transform: rotate(187.2deg);
  }
  .element .model .orbital .electron:nth-last-child(25):first-child ~ .electron:nth-child(15) {
    transform: rotate(201.6deg);
  }
  .element .model .orbital .electron:nth-last-child(25):first-child ~ .electron:nth-child(16) {
    transform: rotate(216deg);
  }
  .element .model .orbital .electron:nth-last-child(25):first-child ~ .electron:nth-child(17) {
    transform: rotate(230.4deg);
  }
  .element .model .orbital .electron:nth-last-child(25):first-child ~ .electron:nth-child(18) {
    transform: rotate(244.8deg);
  }
  .element .model .orbital .electron:nth-last-child(25):first-child ~ .electron:nth-child(19) {
    transform: rotate(259.2deg);
  }
  .element .model .orbital .electron:nth-last-child(25):first-child ~ .electron:nth-child(20) {
    transform: rotate(273.6deg);
  }
  .element .model .orbital .electron:nth-last-child(25):first-child ~ .electron:nth-child(21) {
    transform: rotate(288deg);
  }
  .element .model .orbital .electron:nth-last-child(25):first-child ~ .electron:nth-child(22) {
    transform: rotate(302.4deg);
  }
  .element .model .orbital .electron:nth-last-child(25):first-child ~ .electron:nth-child(23) {
    transform: rotate(316.8deg);
  }
  .element .model .orbital .electron:nth-last-child(25):first-child ~ .electron:nth-child(24) {
    transform: rotate(331.2deg);
  }
  .element .model .orbital .electron:nth-last-child(25):first-child ~ .electron:nth-child(25) {
    transform: rotate(345.6deg);
  }
  .element .model .orbital .electron:nth-last-child(26):first-child ~ .electron:nth-child(1) {
    transform: rotate(0deg);
  }
  .element .model .orbital .electron:nth-last-child(26):first-child ~ .electron:nth-child(2) {
    transform: rotate(13.8461538462deg);
  }
  .element .model .orbital .electron:nth-last-child(26):first-child ~ .electron:nth-child(3) {
    transform: rotate(27.6923076923deg);
  }
  .element .model .orbital .electron:nth-last-child(26):first-child ~ .electron:nth-child(4) {
    transform: rotate(41.5384615385deg);
  }
  .element .model .orbital .electron:nth-last-child(26):first-child ~ .electron:nth-child(5) {
    transform: rotate(55.3846153846deg);
  }
  .element .model .orbital .electron:nth-last-child(26):first-child ~ .electron:nth-child(6) {
    transform: rotate(69.2307692308deg);
  }
  .element .model .orbital .electron:nth-last-child(26):first-child ~ .electron:nth-child(7) {
    transform: rotate(83.0769230769deg);
  }
  .element .model .orbital .electron:nth-last-child(26):first-child ~ .electron:nth-child(8) {
    transform: rotate(96.9230769231deg);
  }
  .element .model .orbital .electron:nth-last-child(26):first-child ~ .electron:nth-child(9) {
    transform: rotate(110.7692307692deg);
  }
  .element .model .orbital .electron:nth-last-child(26):first-child ~ .electron:nth-child(10) {
    transform: rotate(124.6153846154deg);
  }
  .element .model .orbital .electron:nth-last-child(26):first-child ~ .electron:nth-child(11) {
    transform: rotate(138.4615384615deg);
  }
  .element .model .orbital .electron:nth-last-child(26):first-child ~ .electron:nth-child(12) {
    transform: rotate(152.3076923077deg);
  }
  .element .model .orbital .electron:nth-last-child(26):first-child ~ .electron:nth-child(13) {
    transform: rotate(166.1538461538deg);
  }
  .element .model .orbital .electron:nth-last-child(26):first-child ~ .electron:nth-child(14) {
    transform: rotate(180deg);
  }
  .element .model .orbital .electron:nth-last-child(26):first-child ~ .electron:nth-child(15) {
    transform: rotate(193.8461538462deg);
  }
  .element .model .orbital .electron:nth-last-child(26):first-child ~ .electron:nth-child(16) {
    transform: rotate(207.6923076923deg);
  }
  .element .model .orbital .electron:nth-last-child(26):first-child ~ .electron:nth-child(17) {
    transform: rotate(221.5384615385deg);
  }
  .element .model .orbital .electron:nth-last-child(26):first-child ~ .electron:nth-child(18) {
    transform: rotate(235.3846153846deg);
  }
  .element .model .orbital .electron:nth-last-child(26):first-child ~ .electron:nth-child(19) {
    transform: rotate(249.2307692308deg);
  }
  .element .model .orbital .electron:nth-last-child(26):first-child ~ .electron:nth-child(20) {
    transform: rotate(263.0769230769deg);
  }
  .element .model .orbital .electron:nth-last-child(26):first-child ~ .electron:nth-child(21) {
    transform: rotate(276.9230769231deg);
  }
  .element .model .orbital .electron:nth-last-child(26):first-child ~ .electron:nth-child(22) {
    transform: rotate(290.7692307692deg);
  }
  .element .model .orbital .electron:nth-last-child(26):first-child ~ .electron:nth-child(23) {
    transform: rotate(304.6153846154deg);
  }
  .element .model .orbital .electron:nth-last-child(26):first-child ~ .electron:nth-child(24) {
    transform: rotate(318.4615384615deg);
  }
  .element .model .orbital .electron:nth-last-child(26):first-child ~ .electron:nth-child(25) {
    transform: rotate(332.3076923077deg);
  }
  .element .model .orbital .electron:nth-last-child(26):first-child ~ .electron:nth-child(26) {
    transform: rotate(346.1538461538deg);
  }
  .element .model .orbital .electron:nth-last-child(27):first-child ~ .electron:nth-child(1) {
    transform: rotate(0deg);
  }
  .element .model .orbital .electron:nth-last-child(27):first-child ~ .electron:nth-child(2) {
    transform: rotate(13.3333333333deg);
  }
  .element .model .orbital .electron:nth-last-child(27):first-child ~ .electron:nth-child(3) {
    transform: rotate(26.6666666667deg);
  }
  .element .model .orbital .electron:nth-last-child(27):first-child ~ .electron:nth-child(4) {
    transform: rotate(40deg);
  }
  .element .model .orbital .electron:nth-last-child(27):first-child ~ .electron:nth-child(5) {
    transform: rotate(53.3333333333deg);
  }
  .element .model .orbital .electron:nth-last-child(27):first-child ~ .electron:nth-child(6) {
    transform: rotate(66.6666666667deg);
  }
  .element .model .orbital .electron:nth-last-child(27):first-child ~ .electron:nth-child(7) {
    transform: rotate(80deg);
  }
  .element .model .orbital .electron:nth-last-child(27):first-child ~ .electron:nth-child(8) {
    transform: rotate(93.3333333333deg);
  }
  .element .model .orbital .electron:nth-last-child(27):first-child ~ .electron:nth-child(9) {
    transform: rotate(106.6666666667deg);
  }
  .element .model .orbital .electron:nth-last-child(27):first-child ~ .electron:nth-child(10) {
    transform: rotate(120deg);
  }
  .element .model .orbital .electron:nth-last-child(27):first-child ~ .electron:nth-child(11) {
    transform: rotate(133.3333333333deg);
  }
  .element .model .orbital .electron:nth-last-child(27):first-child ~ .electron:nth-child(12) {
    transform: rotate(146.6666666667deg);
  }
  .element .model .orbital .electron:nth-last-child(27):first-child ~ .electron:nth-child(13) {
    transform: rotate(160deg);
  }
  .element .model .orbital .electron:nth-last-child(27):first-child ~ .electron:nth-child(14) {
    transform: rotate(173.3333333333deg);
  }
  .element .model .orbital .electron:nth-last-child(27):first-child ~ .electron:nth-child(15) {
    transform: rotate(186.6666666667deg);
  }
  .element .model .orbital .electron:nth-last-child(27):first-child ~ .electron:nth-child(16) {
    transform: rotate(200deg);
  }
  .element .model .orbital .electron:nth-last-child(27):first-child ~ .electron:nth-child(17) {
    transform: rotate(213.3333333333deg);
  }
  .element .model .orbital .electron:nth-last-child(27):first-child ~ .electron:nth-child(18) {
    transform: rotate(226.6666666667deg);
  }
  .element .model .orbital .electron:nth-last-child(27):first-child ~ .electron:nth-child(19) {
    transform: rotate(240deg);
  }
  .element .model .orbital .electron:nth-last-child(27):first-child ~ .electron:nth-child(20) {
    transform: rotate(253.3333333333deg);
  }
  .element .model .orbital .electron:nth-last-child(27):first-child ~ .electron:nth-child(21) {
    transform: rotate(266.6666666667deg);
  }
  .element .model .orbital .electron:nth-last-child(27):first-child ~ .electron:nth-child(22) {
    transform: rotate(280deg);
  }
  .element .model .orbital .electron:nth-last-child(27):first-child ~ .electron:nth-child(23) {
    transform: rotate(293.3333333333deg);
  }
  .element .model .orbital .electron:nth-last-child(27):first-child ~ .electron:nth-child(24) {
    transform: rotate(306.6666666667deg);
  }
  .element .model .orbital .electron:nth-last-child(27):first-child ~ .electron:nth-child(25) {
    transform: rotate(320deg);
  }
  .element .model .orbital .electron:nth-last-child(27):first-child ~ .electron:nth-child(26) {
    transform: rotate(333.3333333333deg);
  }
  .element .model .orbital .electron:nth-last-child(27):first-child ~ .electron:nth-child(27) {
    transform: rotate(346.6666666667deg);
  }
  .element .model .orbital .electron:nth-last-child(28):first-child ~ .electron:nth-child(1) {
    transform: rotate(0deg);
  }
  .element .model .orbital .electron:nth-last-child(28):first-child ~ .electron:nth-child(2) {
    transform: rotate(12.8571428571deg);
  }
  .element .model .orbital .electron:nth-last-child(28):first-child ~ .electron:nth-child(3) {
    transform: rotate(25.7142857143deg);
  }
  .element .model .orbital .electron:nth-last-child(28):first-child ~ .electron:nth-child(4) {
    transform: rotate(38.5714285714deg);
  }
  .element .model .orbital .electron:nth-last-child(28):first-child ~ .electron:nth-child(5) {
    transform: rotate(51.4285714286deg);
  }
  .element .model .orbital .electron:nth-last-child(28):first-child ~ .electron:nth-child(6) {
    transform: rotate(64.2857142857deg);
  }
  .element .model .orbital .electron:nth-last-child(28):first-child ~ .electron:nth-child(7) {
    transform: rotate(77.1428571429deg);
  }
  .element .model .orbital .electron:nth-last-child(28):first-child ~ .electron:nth-child(8) {
    transform: rotate(90deg);
  }
  .element .model .orbital .electron:nth-last-child(28):first-child ~ .electron:nth-child(9) {
    transform: rotate(102.8571428571deg);
  }
  .element .model .orbital .electron:nth-last-child(28):first-child ~ .electron:nth-child(10) {
    transform: rotate(115.7142857143deg);
  }
  .element .model .orbital .electron:nth-last-child(28):first-child ~ .electron:nth-child(11) {
    transform: rotate(128.5714285714deg);
  }
  .element .model .orbital .electron:nth-last-child(28):first-child ~ .electron:nth-child(12) {
    transform: rotate(141.4285714286deg);
  }
  .element .model .orbital .electron:nth-last-child(28):first-child ~ .electron:nth-child(13) {
    transform: rotate(154.2857142857deg);
  }
  .element .model .orbital .electron:nth-last-child(28):first-child ~ .electron:nth-child(14) {
    transform: rotate(167.1428571429deg);
  }
  .element .model .orbital .electron:nth-last-child(28):first-child ~ .electron:nth-child(15) {
    transform: rotate(180deg);
  }
  .element .model .orbital .electron:nth-last-child(28):first-child ~ .electron:nth-child(16) {
    transform: rotate(192.8571428571deg);
  }
  .element .model .orbital .electron:nth-last-child(28):first-child ~ .electron:nth-child(17) {
    transform: rotate(205.7142857143deg);
  }
  .element .model .orbital .electron:nth-last-child(28):first-child ~ .electron:nth-child(18) {
    transform: rotate(218.5714285714deg);
  }
  .element .model .orbital .electron:nth-last-child(28):first-child ~ .electron:nth-child(19) {
    transform: rotate(231.4285714286deg);
  }
  .element .model .orbital .electron:nth-last-child(28):first-child ~ .electron:nth-child(20) {
    transform: rotate(244.2857142857deg);
  }
  .element .model .orbital .electron:nth-last-child(28):first-child ~ .electron:nth-child(21) {
    transform: rotate(257.1428571429deg);
  }
  .element .model .orbital .electron:nth-last-child(28):first-child ~ .electron:nth-child(22) {
    transform: rotate(270deg);
  }
  .element .model .orbital .electron:nth-last-child(28):first-child ~ .electron:nth-child(23) {
    transform: rotate(282.8571428571deg);
  }
  .element .model .orbital .electron:nth-last-child(28):first-child ~ .electron:nth-child(24) {
    transform: rotate(295.7142857143deg);
  }
  .element .model .orbital .electron:nth-last-child(28):first-child ~ .electron:nth-child(25) {
    transform: rotate(308.5714285714deg);
  }
  .element .model .orbital .electron:nth-last-child(28):first-child ~ .electron:nth-child(26) {
    transform: rotate(321.4285714286deg);
  }
  .element .model .orbital .electron:nth-last-child(28):first-child ~ .electron:nth-child(27) {
    transform: rotate(334.2857142857deg);
  }
  .element .model .orbital .electron:nth-last-child(28):first-child ~ .electron:nth-child(28) {
    transform: rotate(347.1428571429deg);
  }
  .element .model .orbital .electron:nth-last-child(29):first-child ~ .electron:nth-child(1) {
    transform: rotate(0deg);
  }
  .element .model .orbital .electron:nth-last-child(29):first-child ~ .electron:nth-child(2) {
    transform: rotate(12.4137931034deg);
  }
  .element .model .orbital .electron:nth-last-child(29):first-child ~ .electron:nth-child(3) {
    transform: rotate(24.8275862069deg);
  }
  .element .model .orbital .electron:nth-last-child(29):first-child ~ .electron:nth-child(4) {
    transform: rotate(37.2413793103deg);
  }
  .element .model .orbital .electron:nth-last-child(29):first-child ~ .electron:nth-child(5) {
    transform: rotate(49.6551724138deg);
  }
  .element .model .orbital .electron:nth-last-child(29):first-child ~ .electron:nth-child(6) {
    transform: rotate(62.0689655172deg);
  }
  .element .model .orbital .electron:nth-last-child(29):first-child ~ .electron:nth-child(7) {
    transform: rotate(74.4827586207deg);
  }
  .element .model .orbital .electron:nth-last-child(29):first-child ~ .electron:nth-child(8) {
    transform: rotate(86.8965517241deg);
  }
  .element .model .orbital .electron:nth-last-child(29):first-child ~ .electron:nth-child(9) {
    transform: rotate(99.3103448276deg);
  }
  .element .model .orbital .electron:nth-last-child(29):first-child ~ .electron:nth-child(10) {
    transform: rotate(111.724137931deg);
  }
  .element .model .orbital .electron:nth-last-child(29):first-child ~ .electron:nth-child(11) {
    transform: rotate(124.1379310345deg);
  }
  .element .model .orbital .electron:nth-last-child(29):first-child ~ .electron:nth-child(12) {
    transform: rotate(136.5517241379deg);
  }
  .element .model .orbital .electron:nth-last-child(29):first-child ~ .electron:nth-child(13) {
    transform: rotate(148.9655172414deg);
  }
  .element .model .orbital .electron:nth-last-child(29):first-child ~ .electron:nth-child(14) {
    transform: rotate(161.3793103448deg);
  }
  .element .model .orbital .electron:nth-last-child(29):first-child ~ .electron:nth-child(15) {
    transform: rotate(173.7931034483deg);
  }
  .element .model .orbital .electron:nth-last-child(29):first-child ~ .electron:nth-child(16) {
    transform: rotate(186.2068965517deg);
  }
  .element .model .orbital .electron:nth-last-child(29):first-child ~ .electron:nth-child(17) {
    transform: rotate(198.6206896552deg);
  }
  .element .model .orbital .electron:nth-last-child(29):first-child ~ .electron:nth-child(18) {
    transform: rotate(211.0344827586deg);
  }
  .element .model .orbital .electron:nth-last-child(29):first-child ~ .electron:nth-child(19) {
    transform: rotate(223.4482758621deg);
  }
  .element .model .orbital .electron:nth-last-child(29):first-child ~ .electron:nth-child(20) {
    transform: rotate(235.8620689655deg);
  }
  .element .model .orbital .electron:nth-last-child(29):first-child ~ .electron:nth-child(21) {
    transform: rotate(248.275862069deg);
  }
  .element .model .orbital .electron:nth-last-child(29):first-child ~ .electron:nth-child(22) {
    transform: rotate(260.6896551724deg);
  }
  .element .model .orbital .electron:nth-last-child(29):first-child ~ .electron:nth-child(23) {
    transform: rotate(273.1034482759deg);
  }
  .element .model .orbital .electron:nth-last-child(29):first-child ~ .electron:nth-child(24) {
    transform: rotate(285.5172413793deg);
  }
  .element .model .orbital .electron:nth-last-child(29):first-child ~ .electron:nth-child(25) {
    transform: rotate(297.9310344828deg);
  }
  .element .model .orbital .electron:nth-last-child(29):first-child ~ .electron:nth-child(26) {
    transform: rotate(310.3448275862deg);
  }
  .element .model .orbital .electron:nth-last-child(29):first-child ~ .electron:nth-child(27) {
    transform: rotate(322.7586206897deg);
  }
  .element .model .orbital .electron:nth-last-child(29):first-child ~ .electron:nth-child(28) {
    transform: rotate(335.1724137931deg);
  }
  .element .model .orbital .electron:nth-last-child(29):first-child ~ .electron:nth-child(29) {
    transform: rotate(347.5862068966deg);
  }
  .element .model .orbital .electron:nth-last-child(30):first-child ~ .electron:nth-child(1) {
    transform: rotate(0deg);
  }
  .element .model .orbital .electron:nth-last-child(30):first-child ~ .electron:nth-child(2) {
    transform: rotate(12deg);
  }
  .element .model .orbital .electron:nth-last-child(30):first-child ~ .electron:nth-child(3) {
    transform: rotate(24deg);
  }
  .element .model .orbital .electron:nth-last-child(30):first-child ~ .electron:nth-child(4) {
    transform: rotate(36deg);
  }
  .element .model .orbital .electron:nth-last-child(30):first-child ~ .electron:nth-child(5) {
    transform: rotate(48deg);
  }
  .element .model .orbital .electron:nth-last-child(30):first-child ~ .electron:nth-child(6) {
    transform: rotate(60deg);
  }
  .element .model .orbital .electron:nth-last-child(30):first-child ~ .electron:nth-child(7) {
    transform: rotate(72deg);
  }
  .element .model .orbital .electron:nth-last-child(30):first-child ~ .electron:nth-child(8) {
    transform: rotate(84deg);
  }
  .element .model .orbital .electron:nth-last-child(30):first-child ~ .electron:nth-child(9) {
    transform: rotate(96deg);
  }
  .element .model .orbital .electron:nth-last-child(30):first-child ~ .electron:nth-child(10) {
    transform: rotate(108deg);
  }
  .element .model .orbital .electron:nth-last-child(30):first-child ~ .electron:nth-child(11) {
    transform: rotate(120deg);
  }
  .element .model .orbital .electron:nth-last-child(30):first-child ~ .electron:nth-child(12) {
    transform: rotate(132deg);
  }
  .element .model .orbital .electron:nth-last-child(30):first-child ~ .electron:nth-child(13) {
    transform: rotate(144deg);
  }
  .element .model .orbital .electron:nth-last-child(30):first-child ~ .electron:nth-child(14) {
    transform: rotate(156deg);
  }
  .element .model .orbital .electron:nth-last-child(30):first-child ~ .electron:nth-child(15) {
    transform: rotate(168deg);
  }
  .element .model .orbital .electron:nth-last-child(30):first-child ~ .electron:nth-child(16) {
    transform: rotate(180deg);
  }
  .element .model .orbital .electron:nth-last-child(30):first-child ~ .electron:nth-child(17) {
    transform: rotate(192deg);
  }
  .element .model .orbital .electron:nth-last-child(30):first-child ~ .electron:nth-child(18) {
    transform: rotate(204deg);
  }
  .element .model .orbital .electron:nth-last-child(30):first-child ~ .electron:nth-child(19) {
    transform: rotate(216deg);
  }
  .element .model .orbital .electron:nth-last-child(30):first-child ~ .electron:nth-child(20) {
    transform: rotate(228deg);
  }
  .element .model .orbital .electron:nth-last-child(30):first-child ~ .electron:nth-child(21) {
    transform: rotate(240deg);
  }
  .element .model .orbital .electron:nth-last-child(30):first-child ~ .electron:nth-child(22) {
    transform: rotate(252deg);
  }
  .element .model .orbital .electron:nth-last-child(30):first-child ~ .electron:nth-child(23) {
    transform: rotate(264deg);
  }
  .element .model .orbital .electron:nth-last-child(30):first-child ~ .electron:nth-child(24) {
    transform: rotate(276deg);
  }
  .element .model .orbital .electron:nth-last-child(30):first-child ~ .electron:nth-child(25) {
    transform: rotate(288deg);
  }
  .element .model .orbital .electron:nth-last-child(30):first-child ~ .electron:nth-child(26) {
    transform: rotate(300deg);
  }
  .element .model .orbital .electron:nth-last-child(30):first-child ~ .electron:nth-child(27) {
    transform: rotate(312deg);
  }
  .element .model .orbital .electron:nth-last-child(30):first-child ~ .electron:nth-child(28) {
    transform: rotate(324deg);
  }
  .element .model .orbital .electron:nth-last-child(30):first-child ~ .electron:nth-child(29) {
    transform: rotate(336deg);
  }
  .element .model .orbital .electron:nth-last-child(30):first-child ~ .electron:nth-child(30) {
    transform: rotate(348deg);
  }
  .element .model .orbital .electron:nth-last-child(31):first-child ~ .electron:nth-child(1) {
    transform: rotate(0deg);
  }
  .element .model .orbital .electron:nth-last-child(31):first-child ~ .electron:nth-child(2) {
    transform: rotate(11.6129032258deg);
  }
  .element .model .orbital .electron:nth-last-child(31):first-child ~ .electron:nth-child(3) {
    transform: rotate(23.2258064516deg);
  }
  .element .model .orbital .electron:nth-last-child(31):first-child ~ .electron:nth-child(4) {
    transform: rotate(34.8387096774deg);
  }
  .element .model .orbital .electron:nth-last-child(31):first-child ~ .electron:nth-child(5) {
    transform: rotate(46.4516129032deg);
  }
  .element .model .orbital .electron:nth-last-child(31):first-child ~ .electron:nth-child(6) {
    transform: rotate(58.064516129deg);
  }
  .element .model .orbital .electron:nth-last-child(31):first-child ~ .electron:nth-child(7) {
    transform: rotate(69.6774193548deg);
  }
  .element .model .orbital .electron:nth-last-child(31):first-child ~ .electron:nth-child(8) {
    transform: rotate(81.2903225806deg);
  }
  .element .model .orbital .electron:nth-last-child(31):first-child ~ .electron:nth-child(9) {
    transform: rotate(92.9032258065deg);
  }
  .element .model .orbital .electron:nth-last-child(31):first-child ~ .electron:nth-child(10) {
    transform: rotate(104.5161290323deg);
  }
  .element .model .orbital .electron:nth-last-child(31):first-child ~ .electron:nth-child(11) {
    transform: rotate(116.1290322581deg);
  }
  .element .model .orbital .electron:nth-last-child(31):first-child ~ .electron:nth-child(12) {
    transform: rotate(127.7419354839deg);
  }
  .element .model .orbital .electron:nth-last-child(31):first-child ~ .electron:nth-child(13) {
    transform: rotate(139.3548387097deg);
  }
  .element .model .orbital .electron:nth-last-child(31):first-child ~ .electron:nth-child(14) {
    transform: rotate(150.9677419355deg);
  }
  .element .model .orbital .electron:nth-last-child(31):first-child ~ .electron:nth-child(15) {
    transform: rotate(162.5806451613deg);
  }
  .element .model .orbital .electron:nth-last-child(31):first-child ~ .electron:nth-child(16) {
    transform: rotate(174.1935483871deg);
  }
  .element .model .orbital .electron:nth-last-child(31):first-child ~ .electron:nth-child(17) {
    transform: rotate(185.8064516129deg);
  }
  .element .model .orbital .electron:nth-last-child(31):first-child ~ .electron:nth-child(18) {
    transform: rotate(197.4193548387deg);
  }
  .element .model .orbital .electron:nth-last-child(31):first-child ~ .electron:nth-child(19) {
    transform: rotate(209.0322580645deg);
  }
  .element .model .orbital .electron:nth-last-child(31):first-child ~ .electron:nth-child(20) {
    transform: rotate(220.6451612903deg);
  }
  .element .model .orbital .electron:nth-last-child(31):first-child ~ .electron:nth-child(21) {
    transform: rotate(232.2580645161deg);
  }
  .element .model .orbital .electron:nth-last-child(31):first-child ~ .electron:nth-child(22) {
    transform: rotate(243.8709677419deg);
  }
  .element .model .orbital .electron:nth-last-child(31):first-child ~ .electron:nth-child(23) {
    transform: rotate(255.4838709677deg);
  }
  .element .model .orbital .electron:nth-last-child(31):first-child ~ .electron:nth-child(24) {
    transform: rotate(267.0967741935deg);
  }
  .element .model .orbital .electron:nth-last-child(31):first-child ~ .electron:nth-child(25) {
    transform: rotate(278.7096774194deg);
  }
  .element .model .orbital .electron:nth-last-child(31):first-child ~ .electron:nth-child(26) {
    transform: rotate(290.3225806452deg);
  }
  .element .model .orbital .electron:nth-last-child(31):first-child ~ .electron:nth-child(27) {
    transform: rotate(301.935483871deg);
  }
  .element .model .orbital .electron:nth-last-child(31):first-child ~ .electron:nth-child(28) {
    transform: rotate(313.5483870968deg);
  }
  .element .model .orbital .electron:nth-last-child(31):first-child ~ .electron:nth-child(29) {
    transform: rotate(325.1612903226deg);
  }
  .element .model .orbital .electron:nth-last-child(31):first-child ~ .electron:nth-child(30) {
    transform: rotate(336.7741935484deg);
  }
  .element .model .orbital .electron:nth-last-child(31):first-child ~ .electron:nth-child(31) {
    transform: rotate(348.3870967742deg);
  }
  .element .model .orbital .electron:nth-last-child(32):first-child ~ .electron:nth-child(1) {
    transform: rotate(0deg);
  }
  .element .model .orbital .electron:nth-last-child(32):first-child ~ .electron:nth-child(2) {
    transform: rotate(11.25deg);
  }
  .element .model .orbital .electron:nth-last-child(32):first-child ~ .electron:nth-child(3) {
    transform: rotate(22.5deg);
  }
  .element .model .orbital .electron:nth-last-child(32):first-child ~ .electron:nth-child(4) {
    transform: rotate(33.75deg);
  }
  .element .model .orbital .electron:nth-last-child(32):first-child ~ .electron:nth-child(5) {
    transform: rotate(45deg);
  }
  .element .model .orbital .electron:nth-last-child(32):first-child ~ .electron:nth-child(6) {
    transform: rotate(56.25deg);
  }
  .element .model .orbital .electron:nth-last-child(32):first-child ~ .electron:nth-child(7) {
    transform: rotate(67.5deg);
  }
  .element .model .orbital .electron:nth-last-child(32):first-child ~ .electron:nth-child(8) {
    transform: rotate(78.75deg);
  }
  .element .model .orbital .electron:nth-last-child(32):first-child ~ .electron:nth-child(9) {
    transform: rotate(90deg);
  }
  .element .model .orbital .electron:nth-last-child(32):first-child ~ .electron:nth-child(10) {
    transform: rotate(101.25deg);
  }
  .element .model .orbital .electron:nth-last-child(32):first-child ~ .electron:nth-child(11) {
    transform: rotate(112.5deg);
  }
  .element .model .orbital .electron:nth-last-child(32):first-child ~ .electron:nth-child(12) {
    transform: rotate(123.75deg);
  }
  .element .model .orbital .electron:nth-last-child(32):first-child ~ .electron:nth-child(13) {
    transform: rotate(135deg);
  }
  .element .model .orbital .electron:nth-last-child(32):first-child ~ .electron:nth-child(14) {
    transform: rotate(146.25deg);
  }
  .element .model .orbital .electron:nth-last-child(32):first-child ~ .electron:nth-child(15) {
    transform: rotate(157.5deg);
  }
  .element .model .orbital .electron:nth-last-child(32):first-child ~ .electron:nth-child(16) {
    transform: rotate(168.75deg);
  }
  .element .model .orbital .electron:nth-last-child(32):first-child ~ .electron:nth-child(17) {
    transform: rotate(180deg);
  }
  .element .model .orbital .electron:nth-last-child(32):first-child ~ .electron:nth-child(18) {
    transform: rotate(191.25deg);
  }
  .element .model .orbital .electron:nth-last-child(32):first-child ~ .electron:nth-child(19) {
    transform: rotate(202.5deg);
  }
  .element .model .orbital .electron:nth-last-child(32):first-child ~ .electron:nth-child(20) {
    transform: rotate(213.75deg);
  }
  .element .model .orbital .electron:nth-last-child(32):first-child ~ .electron:nth-child(21) {
    transform: rotate(225deg);
  }
  .element .model .orbital .electron:nth-last-child(32):first-child ~ .electron:nth-child(22) {
    transform: rotate(236.25deg);
  }
  .element .model .orbital .electron:nth-last-child(32):first-child ~ .electron:nth-child(23) {
    transform: rotate(247.5deg);
  }
  .element .model .orbital .electron:nth-last-child(32):first-child ~ .electron:nth-child(24) {
    transform: rotate(258.75deg);
  }
  .element .model .orbital .electron:nth-last-child(32):first-child ~ .electron:nth-child(25) {
    transform: rotate(270deg);
  }
  .element .model .orbital .electron:nth-last-child(32):first-child ~ .electron:nth-child(26) {
    transform: rotate(281.25deg);
  }
  .element .model .orbital .electron:nth-last-child(32):first-child ~ .electron:nth-child(27) {
    transform: rotate(292.5deg);
  }
  .element .model .orbital .electron:nth-last-child(32):first-child ~ .electron:nth-child(28) {
    transform: rotate(303.75deg);
  }
  .element .model .orbital .electron:nth-last-child(32):first-child ~ .electron:nth-child(29) {
    transform: rotate(315deg);
  }
  .element .model .orbital .electron:nth-last-child(32):first-child ~ .electron:nth-child(30) {
    transform: rotate(326.25deg);
  }
  .element .model .orbital .electron:nth-last-child(32):first-child ~ .electron:nth-child(31) {
    transform: rotate(337.5deg);
  }
  .element .model .orbital .electron:nth-last-child(32):first-child ~ .electron:nth-child(32) {
    transform: rotate(348.75deg);
  }
.element input[type=radio] {
  -webkit-appearance: none;
  position: absolute;
  z-index: 2;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
  outline: none;
}
.element input[type=radio].activate:hover ~ .square {
    z-index: 2;
    transform: scale(1.35);
    transition-delay: 0ms;
    outline: none;
    pointer-events: none;
  }
  .element input[type=radio].activate:checked + input[type=radio].deactivate {
    z-index: 3;
    pointer-events: all;
  }
  .element input[type=radio].activate:checked ~ .overlay {
    opacity: 0.75;
  }
  .element input[type=radio].activate:checked ~ .square {
    z-index: 3;
    transform: scale(3);
    transition-duration: 500ms, 0ms, 200ms, 200ms, 200ms, 200ms;
    transition-delay: 0ms;
    outline: none;
    cursor: auto;
  }
  .element input[type=radio].activate:checked ~ .square .label {
    transition-duration: 500ms;
    transform: scale(0.75);
  }
  .element input[type=radio].activate:checked ~ .square .atomic-weight {
    opacity: 1;
    transition: 500ms;
  }
  .element input[type=radio].activate:checked ~ .square .model {
    display: block;
    animation: fade-in;
    animation-duration: 1s;
  }
  .element input[type=radio].activate:checked ~ .square .orbital {
    animation-name: rotate;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
  }
  .element input[type=radio].deactivate {
    position: fixed;
    display: block;
    z-index: 1;
    opacity: 0;
    pointer-events: none;
  }
  .element input[type=radio].deactivate:checked ~ .square {
    z-index: 1;
  }
  
  .placeholder {
    position: relative;
    z-index: -1;
    font-size: 1vw;
    padding-bottom: 100%;
    color: #fff;
    transition: 500ms;
  }
  .placeholder .square {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    border: 2px solid;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0.5;
  }
  
  .gap {
    position: relative;
    padding-bottom: 100%;
    transition: 500ms;
  }
  .gap::before {
    content: "";
    position: absolute;
    left: 50%;
    top: 0;
    width: 50%;
    height: calc(200% + 5px * 2 - 4px);
    border-width: 0 0 2px 2px;
    border-style: solid;
    margin-left: -1px;
    color: #fff;
    opacity: 0.2;
  }
  
  .alkali-metal {
    color: #ff6004;
  }
  
  .alkaline-earth-metal {
    color: #eeff00;
  }
  
  .lanthanoid {
    color: #ff0062;
  }
  
  .actinoid {
    color: #d500e9;
  }
  
  .transition-metal {
    color: #fd1616;
  }
  
  .post-transition-metal {
    color: #00c3ff;
  }
  
  .metalloid {
    color: #00ffae;
  }
  
  .other-nonmetal {
    color: #52ee61;
  }
  
  .noble-gas {
    color: #1d3fff;
  }
  
  .unknown {
    color: #ffffff;
  }
  
  .r1 {
    grid-row: 1;
  }
  
  .r2 {
    grid-row: 2;
  }
  
  .r3 {
    grid-row: 3;
  }
  
  .r4 {
    grid-row: 4;
  }
  
  .r5 {
    grid-row: 5;
  }
  
  .r6 {
    grid-row: 6;
  }
  
  .r7 {
    grid-row: 7;
  }
  
  .r8 {
    grid-row: 8;
  }
  
  .r9 {
    grid-row: 9;
  }
  
  .r10 {
    grid-row: 10;
  }
  
  .c1 {
    grid-column: 1;
  }
  
  .c2 {
    grid-column: 2;
  }
  
  .c3 {
    grid-column: 3;
  }
  
  .c4 {
    grid-column: 4;
  }

.c5 {
  grid-column: 5;
}

.c6 {
  grid-column: 6;
}

.c7 {
  grid-column: 7;
}

.c8 {
  grid-column: 8;
}

.c9 {
  grid-column: 9;
}

.c10 {
  grid-column: 10;
}

.c11 {
  grid-column: 11;
}

.c12 {
    grid-column: 12;
  }
  
  .c13 {
    grid-column: 13;
  }
  
  .c14 {
    grid-column: 14;
  }
  
  .c15 {
    grid-column: 15;
  }
  
  .c16 {
    grid-column: 16;
  }
  
  .c17 {
    grid-column: 17;
  }
  
  .c18 {
    grid-column: 18;
  }
  
  .r1 input[type=radio].activate:checked ~ .square {
    top: 100%;
  }
  
  .r10 input[type=radio].activate:checked ~ .square {
    top: -100%;
  }
  
  .c1 input[type=radio].activate:checked ~ .square {
    left: 100%;
  }
  
  .c18 input[type=radio].activate:checked ~ .square {
    left: -100%;
  }
  
  @keyframes rotate {
    from {
      transform: rotate(0deg);
    }
    to {
      transform: rotate(360deg);
    }
  }
  @keyframes fade-in {
    from {
      opacity: 0;
    }
    to {
      opacity: 1;
    }
  }
  @keyframes noise {
    0%, 100% {
      background-position: 0 0;
    }
    10% {
      background-position: -5% -10%;
    }
    20% {
      background-position: -15% 5%;
    }
    30% {
      background-position: 7% -25%;
    }
    40% {
      background-position: 20% 25%;
    }
    50% {
      background-position: -25% 10%;
    }
    60% {
      background-position: 15% 5%;
    }
    70% {
      background-position: 0% 15%;
    }
    80% {
      background-position: 25% 35%;
    }
    90% {
      background-position: -10% 10%;
    }
  }
  .key {
    position: relative;
    z-index: 1;
    grid-row: 1;
    grid-column-start: 3;
    grid-column-end: 17;
    font-size: 0.8vw;
    line-height: 1.5;
    display: flex;
    align-items: center;
    pointer-events: none;
    user-select: none;
  }
  .key .row {
    position: relative;
    display: flex;
    width: 100%;
    justify-content: space-between;
  }
.key .row label {
  opacity: 0.85;
  cursor: pointer;
  transition: 120ms;
  pointer-events: all;
}
.key .row label:hover {
  opacity: 1 !important;
}

#alkali-metals:checked ~ .periodic-table .element:not(.alkali-metal),
#alkaline-earth-metals:checked ~ .periodic-table .element:not(.alkaline-earth-metal),
#lanthanoids:checked ~ .periodic-table .element:not(.lanthanoid),
#actinoids:checked ~ .periodic-table .element:not(.actinoid),
#transition-metals:checked ~ .periodic-table .element:not(.transition-metal),
#post-transition-metals:checked ~ .periodic-table .element:not(.post-transition-metal),
#metalloids:checked ~ .periodic-table .element:not(.metalloid),
#other-nonmetals:checked ~ .periodic-table .element:not(.other-nonmetal),
#noble-gasses:checked ~ .periodic-table .element:not(.noble-gas),
#unknown:checked ~ .periodic-table .element:not(.unknown),
#alkali-metals:checked ~ .periodic-table .placeholder,
#alkaline-earth-metals:checked ~ .periodic-table .placeholder,
#lanthanoids:checked ~ .periodic-table .placeholder:not(.lanthanoid),
#actinoids:checked ~ .periodic-table .placeholder:not(.actinoid),
#transition-metals:checked ~ .periodic-table .placeholder,
#post-transition-metals:checked ~ .periodic-table .placeholder,
#metalloids:checked ~ .periodic-table .placeholder,
#other-nonmetals:checked ~ .periodic-table .placeholder,
#noble-gasses:checked ~ .periodic-table .placeholder,
#unknown:checked ~ .periodic-table .placeholder {
  opacity: 0.15;
  pointer-events: none;
}

#alkali-metals:checked ~ .periodic-table .key label:not(.alkali-metal),
#alkaline-earth-metals:checked ~ .periodic-table .key label:not(.alkaline-earth-metal),
#lanthanoids:checked ~ .periodic-table .key label:not(.lanthanoid),
#actinoids:checked ~ .periodic-table .key label:not(.actinoid),
#transition-metals:checked ~ .periodic-table .key label:not(.transition-metal),
#post-transition-metals:checked ~ .periodic-table .key label:not(.post-transition-metal),
#metalloids:checked ~ .periodic-table .key label:not(.metalloid),
#other-nonmetals:checked ~ .periodic-table .key label:not(.other-nonmetal),
#noble-gasses:checked ~ .periodic-table .key label:not(.noble-gas),
#unknown:checked ~ .periodic-table .key label:not(.unknown) {
  opacity: 0.65;
}

.category-toggle:not(#lanthanoids):not(#actinoids):checked ~ .periodic-table .gap {
  opacity: 0.5;
}

.category-toggle:checked ~ .category-cancel {
  visibility: visible;
  pointer-events: all;
  cursor: pointer;
}  

Download Source Code

Here, the source code is provided with no copy right restrictions in any manner. To use it click the button below to download it and start making your own responsive periodic table right now.

Conclusion

Responsive Periodic Table of Elements Using HTML & CSS is a brilliant invention and should feature in every site. Here you will get the free source codes on JV Source Codes and the only thing you must do is to link back to us. Thanks!

Just in case you face any issue, please, post your comment below this article. I’ll be happy to help. For more exciting projects, don’t forget to subscribe to our channel.

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