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Created with Fabric.js 1.4.5 NEON Ne Atomic Number 10 Atomic Mass : 20.1797 double click to change this title text! Discovers : Sir William Ramsey,Morris W. TraversWhere : EnglandWhen : 1898How : Like krypton, neon was discovered through the study of liquefied air. Physical Characteristics ColorlessUnder low pressure :glows abright orange red Neon is non-reactive because its shells are full Chemical Characteristics Density : 0.901 grams per cubic cmMelting point : -248.6° CBoiling point -246.1° CState at room temp : Gas Group : 18Period : 2Noble Gas Neon has 14 isotopes whose half-lives are known, with mass numbers 16 to 29. Naturally occurring neon is a mixtureof its three stable isotopes and theyare found in the percentages shown: 20Ne (90.5%), 21Ne (0.7%) and 22Ne (9.2%). When a few thousandvolts are applied to neon, it emits an orange/red light. It is thereforeoften used in brightly lit advertising signs. Georges Claude was the first person to make glass tubesof neon in 1910. He later bent the glass tubes to makes letters thatglowed and produced the first neon advertising signs. Neon is also used in high-voltage warningindicators, in Geiger counters and in televisiontubes. Liquid neon is used as a cryogenic refrigerant. 3 interesting facts 0.0018 percent of Earthsatmosphere is neon. Neon has no stablecompounds. Although it is relatively rare on our planet, neon is the fifth mostabundant element in the universe.
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