Molybdenum vs Rhodium

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PropertyMo MolybdenumRh Rhodium
Atomic number4245
SymbolMoRh
NameMolybdenumRhodium
Categorytransition-metaltransition-metal
Standard Atomic Weight95.95 u102.9055 u
Period55
Group69
Blockss
Phase at STPsolidsolid
Electron configuration[Kr]5s14d5[Kr]5s14d8
Oxidation states[-4, -2, -1, 0, 1, 2, 3, 4, 5, 6][-3, -1, 1, 2, 3, 4, 5, 6, 7]
Electronegativity (Pauling)2.162.28
Electron affinity0.744 eV1.137 eV
Density1.020000e+4 kg/m³1.240000e+4 kg/m³
Melting point2622.85 °C1963.85 °C
Boiling point4638.85 °C3694.85 °C
Discovery year17781803