Arsenic vs Rhodium

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PropertyAs ArsenicRh Rhodium
Atomic number3345
SymbolAsRh
NameArsenicRhodium
Categorymetalloidtransition-metal
Standard Atomic Weight74.921595 u102.9055 u
Period45
Group159
Blockps
Phase at STPsolidsolid
Electron configuration[Ar]4s23d104p3[Kr]5s14d8
Oxidation states[-3, -2, -1, 0, 1, 2, 3, 4, 5][-3, -1, 1, 2, 3, 4, 5, 6, 7]
Electronegativity (Pauling)2.182.28
Electron affinity0.81 eV1.137 eV
Density5776 kg/m³1.240000e+4 kg/m³
Melting point816.85 °C1963.85 °C
Boiling point613.85 °C3694.85 °C
Discovery year12501803