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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

            
              <template id="element">
	<div class="element">
		<div class="atomic-number"></div>
		<div class="name"></div>
		<div class="symbol"></div>
		<div class="atomic-weight"></div>
	</div>	
</template>

<h1>Periodic Chart of the Elements</h1>
<div class="container" id="periodic-table">
	<header class="period">
		<div class="header">1</div>
		<div class="header">2</div>
		<div class="header">3</div>
		<div class="header">4</div>
		<div class="header">5</div>
		<div class="header">6</div>
		<div class="header">7</div>
	</header>
	
	<header class="group">
		<div class="header header__ia">I A</div>
		<div class="header header__iia">II A</div>
		<div class="header header__iiia">III A</div>
		<div class="header header__iva">IV A</div>
		<div class="header header__va">V A</div>
		<div class="header header__via">VI A</div>
		<div class="header header__viia">VII A</div>
		<div class="header header__viiia">
			<div>VIII A</div>
		</div>
		<div class="header header__ib">I B</div>
		<div class="header header__iib">II B</div>
		<div class="header header__iiib">III B</div>
		<div class="header header__ivb">IV B</div>
		<div class="header header__vb">V B</div>
		<div class="header header__vib">VI B</div>
		<div class="header header__viib">VII B</div>
		<div class="header header__noble">Noble Gases</div>
	</header>
	
	<section class="information">
		<dl>
			<dt>The Symbol.</dt>
			<dd>Shown in the middle of each block directly below the name of the element. The colour used indicates the physical state of the element under ordinary conditions: black for solids, green for liquids, and blue for gases.</dd>
			<dt>The Atomic Weight.</dt>
			<dd>Directly below the symbol for each element the atomic weight is shown in black. The values are taken from the official Report on Atomic Weights Cf. J. Amer. Chem. Soc. 84,4193 (1976). For elements not listed in the Report the mass number of the longest lived isotope is shown in brackets.</dd>
			<dt>The Atomic Number.</dt>
			<dd>Shown in red in the upper left hand corner.</dd>
		</dl>
	</section>
	
	<div class="lanthanide">
		*Lanthanide Series <span class="arrow">&rarr;</span>
	</div>
	<div class="actinide">
		*Actinide Series <span class="arrow">&rarr;</span>
	</div>
</div>

<p>Table of elements data sourced from <a href="https://github.com/Bowserinator/Periodic-Table-JSON" target="_blank" rel="noreferrer" title="Periodic Table JSON GIT repository">Periodic Table JSON</a> by Bowserinator. <a href="https://www.alamy.com/stock-photo-old-periodic-table-of-elements-showing-the-symbol-atomic-weight-atomic-135758502.html" title="Original reference image" target="_blank" rel="noreferrer">Original.</a></p>
            
          
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	font-size: 200%;
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!
            
              const ELEMENTS = [
	{
		name: "Hydrogen",
		atomic_mass: 1.008,
		number: 1,
		phase: "Gas",
		symbol: "H"
	},
	{
		name: "Helium",
		atomic_mass: 4.0026022,
		number: 2,
		phase: "Gas",
		symbol: "He"
	},
	{
		name: "Lithium",
		atomic_mass: 6.94,
		number: 3,
		phase: "Solid",
		symbol: "Li"
	},
	{
		name: "Beryllium",
		atomic_mass: 9.01218315,
		number: 4,
		phase: "Solid",
		symbol: "Be"
	},
	{
		name: "Boron",
		atomic_mass: 10.81,
		number: 5,
		phase: "Solid",
		symbol: "B"
	},
	{
		name: "Carbon",
		atomic_mass: 12.011,
		number: 6,
		phase: "Solid",
		symbol: "C"
	},
	{
		name: "Nitrogen",
		atomic_mass: 14.007,
		number: 7,
		phase: "Gas",
		symbol: "N"
	},
	{
		name: "Oxygen",
		atomic_mass: 15.999,
		number: 8,
		phase: "Gas",
		symbol: "O"
	},
	{
		name: "Fluorine",
		atomic_mass: 18.9984031636,
		number: 9,
		phase: "Gas",
		symbol: "F"
	},
	{
		name: "Neon",
		atomic_mass: 20.17976,
		number: 10,
		phase: "Gas",
		symbol: "Ne"
	},
	{
		name: "Sodium",
		atomic_mass: 22.989769282,
		number: 11,
		phase: "Solid",
		symbol: "Na"
	},
	{
		name: "Magnesium",
		atomic_mass: 24.305,
		number: 12,
		phase: "Solid",
		symbol: "Mg"
	},
	{
		name: "Aluminium",
		atomic_mass: 26.98153857,
		discovered_by: null,
		number: 13,
		phase: "Solid",
		symbol: "Al"
	},
	{
		name: "Silicon",
		atomic_mass: 28.085,
		number: 14,
		phase: "Solid",
		symbol: "Si"
	},
	{
		name: "Phosphorus",
		atomic_mass: 30.9737619985,
		number: 15,
		phase: "Solid",
		symbol: "P"
	},
	{
		name: "Sulfur",
		atomic_mass: 32.06,
		number: 16,
		phase: "Solid",
		symbol: "S"
	},
	{
		name: "Chlorine",
		atomic_mass: 35.45,
		number: 17,
		phase: "Gas",
		symbol: "Cl"
	},
	{
		name: "Argon",
		atomic_mass: 39.9481,
		number: 18,
		phase: "Gas",
		symbol: "Ar"
	},
	{
		name: "Potassium",
		atomic_mass: 39.09831,
		number: 19,
		phase: "Solid",
		symbol: "K"
	},
	{
		name: "Calcium",
		atomic_mass: 40.0784,
		number: 20,
		phase: "Solid",
		symbol: "Ca"
	},
	{
		name: "Scandium",
		atomic_mass: 44.9559085,
		number: 21,
		phase: "Solid",
		symbol: "Sc"
	},
	{
		name: "Titanium",
		atomic_mass: 47.8671,
		number: 22,
		phase: "Solid",
		symbol: "Ti"
	},
	{
		name: "Vanadium",
		atomic_mass: 50.94151,
		number: 23,
		phase: "Solid",
		symbol: "V"
	},
	{
		name: "Chromium",
		atomic_mass: 51.99616,
		number: 24,
		phase: "Solid",
		symbol: "Cr"
	},
	{
		name: "Manganese",
		atomic_mass: 54.9380443,
		number: 25,
		phase: "Solid",
		symbol: "Mn"
	},
	{
		name: "Iron",
		atomic_mass: 55.8452,
		number: 26,
		phase: "Solid",
		symbol: "Fe"
	},
	{
		name: "Cobalt",
		atomic_mass: 58.9331944,
		number: 27,
		phase: "Solid",
		symbol: "Co"
	},
	{
		name: "Nickel",
		atomic_mass: 58.69344,
		number: 28,
		phase: "Solid",
		symbol: "Ni"
	},
	{
		name: "Copper",
		atomic_mass: 63.5463,
		number: 29,
		phase: "Solid",
		symbol: "Cu"
	},
	{
		name: "Zinc",
		atomic_mass: 65.382,
		number: 30,
		phase: "Solid",
		symbol: "Zn"
	},
	{
		name: "Gallium",
		atomic_mass: 69.7231,
		number: 31,
		phase: "Solid",
		symbol: "Ga"
	},
	{
		name: "Germanium",
		atomic_mass: 72.6308,
		number: 32,
		phase: "Solid",
		symbol: "Ge"
	},
	{
		name: "Arsenic",
		atomic_mass: 74.9215956,
		number: 33,
		phase: "Solid",
		symbol: "As"
	},
	{
		name: "Selenium",
		atomic_mass: 78.9718,
		number: 34,
		phase: "Solid",
		symbol: "Se"
	},
	{
		name: "Bromine",
		atomic_mass: 79.904,
		number: 35,
		phase: "Liquid",
		symbol: "Br"
	},
	{
		name: "Krypton",
		atomic_mass: 83.7982,
		number: 36,
		phase: "Gas",
		symbol: "Kr"
	},
	{
		name: "Rubidium",
		atomic_mass: 85.46783,
		number: 37,
		phase: "Solid",
		symbol: "Rb"
	},
	{
		name: "Strontium",
		atomic_mass: 87.621,
		number: 38,
		phase: "Solid",
		symbol: "Sr"
	},
	{
		name: "Yttrium",
		atomic_mass: 88.905842,
		number: 39,
		phase: "Solid",
		symbol: "Y"
	},
	{
		name: "Zirconium",
		atomic_mass: 91.2242,
		number: 40,
		phase: "Solid",
		symbol: "Zr"
	},
	{
		name: "Niobium",
		atomic_mass: 92.906372,
		number: 41,
		phase: "Solid",
		symbol: "Nb"
	},
	{
		name: "Molybdenum",
		atomic_mass: 95.951,
		number: 42,
		phase: "Solid",
		symbol: "Mo"
	},
	{
		name: "Technetium",
		atomic_mass: 98,
		number: 43,
		phase: "Solid",
		symbol: "Tc"
	},
	{
		name: "Ruthenium",
		atomic_mass: 101.072,
		number: 44,
		phase: "Solid",
		symbol: "Ru"
	},
	{
		name: "Rhodium",
		atomic_mass: 102.905502,
		number: 45,
		phase: "Solid",
		symbol: "Rh"
	},
	{
		name: "Palladium",
		atomic_mass: 106.421,
		number: 46,
		phase: "Solid",
		symbol: "Pd"
	},
	{
		name: "Silver",
		atomic_mass: 107.86822,
		number: 47,
		phase: "Solid",
		symbol: "Ag"
	},
	{
		name: "Cadmium",
		atomic_mass: 112.4144,
		number: 48,
		phase: "Solid",
		symbol: "Cd"
	},
	{
		name: "Indium",
		atomic_mass: 114.8181,
		number: 49,
		phase: "Solid",
		symbol: "In"
	},
	{
		name: "Tin",
		atomic_mass: 118.7107,
		number: 50,
		phase: "Solid",
		symbol: "Sn"
	},
	{
		name: "Antimony",
		atomic_mass: 121.7601,
		number: 51,
		phase: "Solid",
		symbol: "Sb"
	},
	{
		name: "Tellurium",
		atomic_mass: 127.603,
		number: 52,
		phase: "Solid",
		symbol: "Te"
	},
	{
		name: "Iodine",
		atomic_mass: 126.904473,
		number: 53,
		phase: "Solid",
		symbol: "I"
	},
	{
		name: "Xenon",
		atomic_mass: 131.2936,
		number: 54,
		phase: "Gas",
		symbol: "Xe"
	},
	{
		name: "Cesium",
		atomic_mass: 132.905451966,
		number: 55,
		phase: "Solid",
		symbol: "Cs"
	},
	{
		name: "Barium",
		atomic_mass: 137.3277,
		number: 56,
		phase: "Solid",
		symbol: "Ba"
	},
	{
		name: "Lanthanum",
		atomic_mass: 138.905477,
		number: 57,
		phase: "Solid",
		symbol: "La"
	},
	{
		name: "Cerium",
		atomic_mass: 140.1161,
		number: 58,
		phase: "Solid",
		symbol: "Ce"
	},
	{
		name: "Praseodymium",
		atomic_mass: 140.907662,
		number: 59,
		phase: "Solid",
		symbol: "Pr"
	},
	{
		name: "Neodymium",
		atomic_mass: 144.2423,
		number: 60,
		phase: "Solid",
		symbol: "Nd"
	},
	{
		name: "Promethium",
		atomic_mass: 145,
		number: 61,
		phase: "Solid",
		symbol: "Pm"
	},
	{
		name: "Samarium",
		atomic_mass: 150.362,
		number: 62,
		phase: "Solid",
		symbol: "Sm"
	},
	{
		name: "Europium",
		atomic_mass: 151.9641,
		number: 63,
		phase: "Solid",
		symbol: "Eu"
	},
	{
		name: "Gadolinium",
		atomic_mass: 157.253,
		number: 64,
		phase: "Solid",
		symbol: "Gd"
	},
	{
		name: "Terbium",
		atomic_mass: 158.925352,
		number: 65,
		phase: "Solid",
		symbol: "Tb"
	},
	{
		name: "Dysprosium",
		atomic_mass: 162.5001,
		number: 66,
		phase: "Solid",
		symbol: "Dy"
	},
	{
		name: "Holmium",
		atomic_mass: 164.930332,
		number: 67,
		phase: "Solid",
		symbol: "Ho"
	},
	{
		name: "Erbium",
		atomic_mass: 167.2593,
		number: 68,
		phase: "Solid",
		symbol: "Er"
	},
	{
		name: "Thulium",
		atomic_mass: 168.934222,
		number: 69,
		phase: "Solid",
		symbol: "Tm"
	},
	{
		name: "Ytterbium",
		atomic_mass: 173.0451,
		number: 70,
		phase: "Solid",
		symbol: "Yb"
	},
	{
		name: "Lutetium",
		atomic_mass: 174.96681,
		number: 71,
		phase: "Solid",
		symbol: "Lu"
	},
	{
		name: "Hafnium",
		atomic_mass: 178.492,
		number: 72,
		phase: "Solid",
		symbol: "Hf"
	},
	{
		name: "Tantalum",
		atomic_mass: 180.947882,
		number: 73,
		phase: "Solid",
		symbol: "Ta"
	},
	{
		name: "Tungsten",
		atomic_mass: 183.841,
		number: 74,
		phase: "Solid",
		symbol: "W"
	},
	{
		name: "Rhenium",
		atomic_mass: 186.2071,
		number: 75,
		phase: "Solid",
		symbol: "Re"
	},
	{
		name: "Osmium",
		atomic_mass: 190.233,
		number: 76,
		phase: "Solid",
		symbol: "Os"
	},
	{
		name: "Iridium",
		atomic_mass: 192.2173,
		number: 77,
		phase: "Solid",
		symbol: "Ir"
	},
	{
		name: "Platinum",
		atomic_mass: 195.0849,
		number: 78,
		phase: "Solid",
		symbol: "Pt"
	},
	{
		name: "Gold",
		atomic_mass: 196.9665695,
		number: 79,
		phase: "Solid",
		symbol: "Au"
	},
	{
		name: "Mercury",
		atomic_mass: 200.5923,
		number: 80,
		phase: "Liquid",
		symbol: "Hg"
	},
	{
		name: "Thallium",
		atomic_mass: 204.38,
		number: 81,
		phase: "Solid",
		symbol: "Tl"
	},
	{
		name: "Lead",
		atomic_mass: 207.21,
		number: 82,
		phase: "Solid",
		symbol: "Pb"
	},
	{
		name: "Bismuth",
		atomic_mass: 208.980401,
		number: 83,
		phase: "Solid",
		symbol: "Bi"
	},
	{
		name: "Polonium",
		atomic_mass: 209,
		number: 84,
		phase: "Solid",
		symbol: "Po"
	},
	{
		name: "Astatine",
		atomic_mass: 210,
		number: 85,
		phase: "Solid",
		symbol: "At"
	},
	{
		name: "Radon",
		atomic_mass: 222,
		number: 86,
		phase: "Gas",
		symbol: "Rn"
	},
	{
		name: "Francium",
		atomic_mass: 223,
		number: 87,
		phase: "Solid",
		symbol: "Fr"
	},
	{
		name: "Radium",
		atomic_mass: 226,
		number: 88,
		phase: "Solid",
		symbol: "Ra"
	},
	{
		name: "Actinium",
		atomic_mass: 227,
		number: 89,
		phase: "Solid",
		symbol: "Ac"
	},
	{
		name: "Thorium",
		atomic_mass: 232.03774,
		number: 90,
		phase: "Solid",
		symbol: "Th"
	},
	{
		name: "Protactinium",
		atomic_mass: 231.035882,
		number: 91,
		phase: "Solid",
		symbol: "Pa"
	},
	{
		name: "Uranium",
		atomic_mass: 238.028913,
		number: 92,
		phase: "Solid",
		symbol: "U"
	},
	{
		name: "Neptunium",
		atomic_mass: 237,
		number: 93,
		phase: "Solid",
		symbol: "Np"
	},
	{
		name: "Plutonium",
		atomic_mass: 244,
		number: 94,
		phase: "Solid",
		symbol: "Pu"
	},
	{
		name: "Americium",
		atomic_mass: 243,
		number: 95,
		phase: "Solid",
		symbol: "Am"
	},
	{
		name: "Curium",
		atomic_mass: 247,
		number: 96,
		phase: "Solid",
		symbol: "Cm"
	},
	{
		name: "Berkelium",
		atomic_mass: 247,
		number: 97,
		phase: "Solid",
		symbol: "Bk"
	},
	{
		name: "Californium",
		atomic_mass: 251,
		number: 98,
		phase: "Solid",
		symbol: "Cf"
	},
	{
		name: "Einsteinium",
		atomic_mass: 252,
		number: 99,
		phase: "Solid",
		symbol: "Es"
	},
	{
		name: "Fermium",
		atomic_mass: 257,
		number: 100,
		phase: "Solid",
		symbol: "Fm"
	},
	{
		name: "Mendelevium",
		atomic_mass: 258,
		number: 101,
		phase: "Solid",
		symbol: "Md"
	},
	{
		name: "Nobelium",
		atomic_mass: 259,
		number: 102,
		phase: "Solid",
		symbol: "No"
	},
	{
		name: "Lawrencium",
		atomic_mass: 266,
		number: 103,
		phase: "Solid",
		symbol: "Lr"
	},
	{
		name: "Rutherfordium",
		atomic_mass: 267,
		number: 104,
		phase: "Solid",
		symbol: "Rf"
	},
	{
		name: "Dubnium",
		atomic_mass: 268,
		number: 105,
		phase: "Solid",
		symbol: "Db"
	},
	{
		name: "Seaborgium",
		atomic_mass: 269,
		number: 106,
		phase: "Solid",
		symbol: "Sg"
	},
	{
		name: "Bohrium",
		atomic_mass: 270,
		number: 107,
		phase: "Solid",
		symbol: "Bh"
	}
];

const createElement = element => {
	let fragment = document.getElementById("element").content.cloneNode(true);

	fragment.querySelector(".element").classList.add(element.symbol);
	fragment.querySelector(".atomic-number").innerText = element.number;
	fragment.querySelector(".name").innerText = element.name;
	fragment.querySelector(".symbol").innerText = element.symbol;
	fragment.querySelector(".atomic-weight").innerText = element.atomic_mass;

	switch (element.phase) {
		case "Gas":
			fragment.querySelector(".element").classList.add("element__gas");
			break;
		case "Liquid":
			fragment.querySelector(".element").classList.add("element__liquid");
			break;
		default:
	}

	return fragment;
};

function init() {
	for (let i = 0; i < ELEMENTS.length; i++) {
		let element = createElement(ELEMENTS[i]);

		document.getElementById("periodic-table").appendChild(element);
	}
}

init();

            
          
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