Krypton

36
Kr
83.80

krypton.gif (1892 bytes)
Krypton is used in fluorescent light bulbs.

Properties

Symbol Name Atomic Number Atomic Weight Group Number
Kr Krypton 36 83.80 18

Description

Standard State: gas at 298 K
Color: colorless

Krypton was discovered in 1898 by Ramsay and Travers in the residue left after liquid air had nearly boiled away. The atmosphere of Mars has found to contain 0.3 ppm of krypton and is one of the noble gases.  While krypton is generally though of as a rare gas that normally does not combine with other elements or form compounds, it now appears that the existence of some krypton compounds is established.  Krypton is used in certain photographic flash lamps for high-speed photography.