Ruthenium vs Copernicium

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PropertyRu RutheniumCn Copernicium
Atomic number44112
SymbolRuCn
NameRutheniumCopernicium
Categorytransition-metaltransition-metal
Standard Atomic Weight101.07 u285 u
Period57
Group812
Blockss
Phase at STPsolidgas
Electron configuration[Kr]5s14d7[Rn] 7s2 5f14 6d10(predicted)
Oxidation states[-4, -2, 1, 2, 3, 4, 5, 6, 7, 8][2, 4]
Electronegativity (Pauling)2.2N/A
Electron affinity1.05 eV-0.8 eV
Density1.210000e+4 kg/m³1.400000e+4 kg/m³
Melting point2333.85 °C-273.15 °C
Boiling point4149.85 °C-165.15 °C
Discovery year18281996