Neon is a one of chemical element with the symbol Ne and 10 is a atomic number of It. It is a noble gas. It is a inert gas of Group 18 of the periodic table, used in electric signs and fluorescent lamps. It is Colourless, odourless, tasteless, and lighter than air, neon gas occurs in minute quantities in Earth’s atmosphere and trapped within the rocks of Earth’s crust. Though neon is about 31/2 times as plentiful as helium in the atmosphere, dry air contains only 0.0018 percent neon by volume. This element is more abundant in the cosmos than on Earth. It liquefies at −246.048 °C (−411 °F) and freezes at a temperature only 21/2° lower. When under low pressure, it emits a bright orange-red light if an electrical current is passed through it. This property is utilized in neon signs in some fluorescent and gaseous conduction lamps, and in high-voltage testers. The name It is derived from the Greek word neos, Which means “new”.
It was discovered in 1898 by the British chemists Sir William Ramsay and Morris W. Travers as a component of the most volatile fraction of liquefied crude argon obtained from air. It was immediately recognized as a new element by its unique glow when electrically stimulated. Its only commercial source is the atmosphere, in which it is 18 parts per million by volume. Because its boiling point is −246 °C (−411 °F), neon remains, along with helium and hydrogen, in the small fraction of air that resists liquefaction upon cooling to −195.8 °C (−320.4 °F, the boiling point of liquid nitrogen). It is isolated from this cold, gaseous mixture by bringing it into contact with activated charcoal, which adsorbs the neon and hydrogen; removal of hydrogen is affected by adding enough oxygen to convert it all to water, which, along with any surplus oxygen, condenses upon cooling. Processing 88,000 pounds of liquid air will produce one pound of neon.