Ruthenium vs Dubnium

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PropertyRu RutheniumDb Dubnium
Atomic number44105
SymbolRuDb
NameRutheniumDubnium
Categorytransition-metaltransition-metal
Standard Atomic Weight101.07 u268 u
Period57
Group85
Blockss
Phase at STPsolidN/A
Electron configuration[Kr]5s14d7[Rn]7s25f146d3
Oxidation states[-4, -2, 1, 2, 3, 4, 5, 6, 7, 8][3, 4, 5]
Electronegativity (Pauling)2.2N/A
Electron affinity1.05 eV0.56 eV
Density1.210000e+4 kg/m³2.930000e+4 kg/m³
Melting point2333.85 °C-273.15 °C
Boiling point4149.85 °C-273.15 °C
Discovery year18281967