Zirconium vs Rhodium

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PropertyZr ZirconiumRh Rhodium
Atomic number4045
SymbolZrRh
NameZirconiumRhodium
Categorytransition-metaltransition-metal
Standard Atomic Weight91.224 u102.9055 u
Period55
Group49
Blockss
Phase at STPsolidsolid
Electron configuration[Kr]5s24d2[Kr]5s14d8
Oxidation states[1, 2, 3, 4][-3, -1, 1, 2, 3, 4, 5, 6, 7]
Electronegativity (Pauling)1.332.28
Electron affinity0.426 eV1.137 eV
Density6520 kg/m³1.240000e+4 kg/m³
Melting point1854.85 °C1963.85 °C
Boiling point4408.85 °C3694.85 °C
Discovery year17891803