INORGANIC CHEMISTRY A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z                    HOME ABOUT CATEGORIES SITE MAP COPYRIGHT ADVERTISE CONTACT entire Web this site krypton (Kr) Krypton in a discharge tube displays its green and orange spectral signature. Gaseous krypton is colorless, while solid krypton is white. Credit: Pslawinski, Wikipedia A colorless, odorless, highly unreactive gaseous element. Krypton (Kr) is a member of the inert gas family (abundance 1.1 × 10-3%). It is obtained pure by fractional distillation of air. Krypton is used chiefly (with argon) in gas-discharge lamps, fluorescent lights, and electronic flash tubes. Krypton forms a limited range of chemical compounds and some clathrates. It combines with fluorine in an electric discharge to give krypton (II) fluoride (KrF2), a highly reactive, odorless crystalline solid, which decomposes slowly at 20°C, is hydrolyzed by water, and forms adducts with Lewis acid fluorides, e.g. KrF2·2SbF5. KrF2 is used as a strong fluorinating agent. atomic number 36 relative atomic mass 83.80 electron configuration 1s22s22p63s23p63d104s24p6 melting point -156.6°C (-249.9°F) boiling point -152.3°C (-242.1°F) density 3.73 kg/m3 (0 °C) Related category    • INORGANIC CHEMISTRY Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) BACK TO TOP