36
Kr
83.798
Krypton
Element 36 · 83.798 u · p-block
noble gas
A noble gas that produces a brilliant white light in discharge tubes. Not Superman's home planet, but still cool.
Phase (STP)
Gas
Melting Point
-157.36 °C
Boiling Point
-153.22 °C
Density
0.003733 g/cm³
Electronegativity
3.0
Atomic Radius
88 pm
Ionization Energy
1351 kJ/mol
Electron Affinity
0 kJ/mol
Discovered
1898 · William Ramsay
Electron Configuration
[Ar] 3d10 4s2 4p6
Electron Orbitals
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