KrZ =  36

From the Greek "kryptos", meaning "hidden"
(AM) Atomic Mass 83.8  amu    Oxidation States 0
   (BP) Boiling Point -152.3  °C    (MP) Melting Point -156.6  °C
   (ρ) Density 0.003733  g/cm3    Crystal Structure Face Centered Cubic
   ( χ ) Electronegativity n/a    (AR) Atomic Radius 1.1  Å
   Physical State Gas (C) Heat Capacity 0.248  J/g °C
Electronic-Config [Ar]  3d10  4s2  4p6     (I1) First Ionization E 1350.69  kJ/mol
   (ΔHvap) Heat of Vaporization 9.08  kJ/mol     (ΔHfus) Heat of Fusion 1.64  kJ/mol
   Year of Discovery 1898    Location of Discovery United Kingdom
(E°) Standard Potential Inert
Stable isotopes  78Kr,  80Kr,  82Kr,  83Kr,  84Kr,  86Kr
Discovered/Synthesized by Sir William Ramsay, Morris M. Travers
Natural Source Isolated from the liquifaction of air
Common Uses High-intensity lamps, headlights, flashlights, lanterns, neon tubes, lasers
Other Info Probably has not existed on the Superman's planet
Noble gas that can still form compounds
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