Neon essays

Neon essays Neon, meaning new in Greek, was discovered by two British chemists Sir William Ramsay and Morris W. Travers. They discovered the element in the atmosphere while they were studying liquid air. It was separated from other inert gases. This was in the year 1898. Ramsay had predicted the existince of this element two years before in 1897. Neon makes up about 1 part per 65,000 in the earth's atmosphere. It is a colorless, oderless gas. It doesn't readily react with other substances. It does make a compound with fluorine. Neon is classified as a noble gas. The symbol for Neon is Ne. It has the atomic number 10 and an atomic weight of 20.179. Neon is an element that makes up a tiny fraction of the earth's atmosphere. In group 18 of the periodic table, neon is one of the noble gases. It also constitutes 18 parts per 1 million in the atmosphere. Neon occurs naturally in three stable isotopic forms: neon-20, which is the most abundant isotope, neon-22, and neon-21. The first demonstration of the existence of a stable isotope in an element was performed with neon in 1912. Neon can be bought commercially as a by-product of a liquid air manufacture. Neon liquifies under normal pressure at -246.048 degrees celcious, and freezes at -248.67 degrees celcious Liquid neon is used as a cryogenic refrigerant . It has over 40 times more refrigerating capacity per unit volume than liquid helium. When air is liquified at about -200 degrees celcious, Neon is left as a gas. Neon is expensive, but very little of this element is needed for lamps. Neon signs use one quart per 200 to 300 feet of tubing. Liquid Neon is often used as a low-temperature cooling agent. Neon produces a crimson glow in a vacuum electric-discharge tube and is used extensively in the familiar neon light of advertising displays. The term neon light is often incorrectly applied to discharge tubes filled with gases other than ...