Rhodium vs Rutherfordium

PropertyRh RhodiumRf Rutherfordium
Atomic number45104
SymbolRhRf
NameRhodiumRutherfordium
Categorytransition-metaltransition-metal
Standard Atomic Weight102.9055 u263 u
Period57
Group94
Blockss
Phase at STPsolidsolid
Electron configuration[Kr]5s14d8[Rn]7s25f146d2
Oxidation states[-3, -1, 1, 2, 3, 4, 5, 6, 7][3, 4]
Electronegativity (Pauling)2.28N/A
Electron affinity1.137 eV0.65 eV
Density1.240000e+4 kg/m³2.330000e+4 kg/m³
Melting point1963.85 °C2126.85 °C
Boiling point3694.85 °C5526.85 °C
Discovery year18031964