| |
Krypton - LearnThis.Info Enclyclopedia (Site not responding. Last check: 2007-10-20) |
 | | A colorless noble gas, krypton occurs in trace amounts in the atmosphere, is isolated by fractionating liquefied air, and is often used with other rare gases in fluorescent lamps. |
 | | Krypton, a so-called noble gas due to its very low chemical reactivity, is characterized by a brilliant green and orange spectral signature. |
 | | Krypton (Greek kryptos meaning "hidden") was discovered in 1898 by William Ramsay and Morris Travers in residue left from evaporating nearly all components of liquid air. |
| encyclopedia.learnthis.info /k/kr/krypton.html (612 words) |