Xenon vs Osmium

PropertyXe XenonOs Osmium
Atomic number5476
SymbolXeOs
NameXenonOsmium
Categorynoble-gastransition-metal
Standard Atomic Weight131.293 u190.23 u
Period56
Group188
Blockps
Phase at STPgassolid
Electron configuration[Kr]5s24d105p6[Xe]6s24f145d6
Oxidation states[0, 2, 4, 6, 8][-4, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8]
Electronegativity (Pauling)2.62.2
Electron affinity-0.8 eV1.1 eV
Density5.887 kg/m³2.258720e+4 kg/m³
Melting point-111.79 °C3032.85 °C
Boiling point-108.1 °C5011.85 °C
Discovery year18981803