Krypton (Kr) Element Properties
Atomic Mass |
83.8 |
Atomic Number |
36 |
Name Origins |
From the Greek, kryptos = "hidden." |
Year Discovered |
1898 |
Discovery Credits |
Discovered by Sir William Ramsay and M. W. Travers at
London, UK. |
Remarks |
Colorless, odorless gas present in the
atmosphere. Chemically inert to everything but
fluorine. 86Kr has an orange-red line in its atomic spectrum that is used
for the SI length standard where 1 meter = 1,650,763.73 wavelengths. One
meter was originally defined as 1 millionth the distance from the earth's
pole to the equator.
|
References |
Emsley, J., 1991; THE ELEMENTS : Sec. Ed.,
Clarendon Press, Oxford, 251 p. |
See Also |
WebElements,
ChemiCool |