Nickel vs Oganesson

PropertyNi NickelOg Oganesson
Atomic number28118
SymbolNiOg
NameNickelOganesson
Categorytransition-metalnoble-gas
Standard Atomic Weight58.6934 u294 u
Period47
Group1018
Blocksp
Phase at STPsolidgas
Electron configuration[Ar]4s23d8[Rn] 7s2 7p6 5f14 6d10(predicted)
Oxidation states[-2, -1, 0, 1, 2, 3, 4][-1, 0, 1, 2, 4, 6]
Electronegativity (Pauling)1.91N/A
Electron affinity1.156 eV0.056 eV
Density8912 kg/m³7000 kg/m³
Melting point1454.85 °C-273.15 °C
Boiling point2912.85 °C-243.15 °C
Discovery year17512006