Home 36 Kr Krypton back to the periodic table
 
Atomic number   36
Symbol   Kr
Atomic weight   73.80
Density [g/l]   3.48
Melting point [°C]   -156.6
Boiling point [°C]   -152.3
1st Ionization energy [eV]   13.999
Electronic configuration   [Ar] 3d10 4s2 4p6
Oxidation number (most stable)   2
Atomic radius [pm]   200
Ionic radius [pm]   ---
Abundance in crustal rocks [ppm]   ---
Origin of the name   (greek) kryptos = hidden
Discovery   1898 by Ramsay and Travers
Uses   as filling gas for fluorescent lamps as well as flash tubes.
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 © 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst
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