Krypton

ElementKryptonSymbolKr
Atomic Number36Molar Mass83.8 gmol-1
Electron Configuration[Ar]3d104s24p6Normal Stategas/nonmetal
Density @STP3.74x10-3 g cm-3Melting Point-157oC
Boiling Point-153oCStable Isotopes79Kr, 80Kr, 82Kr, 83Kr, 84Kr, 86Kr
Atomic Radiusn/a pmIonic Radius169 (1+) pm
Electronegativity (Pauling)n/aIonization Energy (1st)1351 kJ mol-1
Ionization Energy (2nd)2350 kJ mol-1Ionization Energy (3rd)3565 kJ mol-1
Molar Heat Capacity20.8 J K-1mol-1Standard Molar Entropy164.1 J K-1mol-1
Enthalpy of Fusion1.64 kJ mol-1Enthalpy of Vapourization9.05 kJ mol-1
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