Arsenic vs Bismuth

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PropertyAs ArsenicBi Bismuth
Atomic number3383
SymbolAsBi
NameArsenicBismuth
Categorymetalloidpost-transition-metal
Standard Atomic Weight74.921595 u208.9804 u
Period46
Group1515
Blockpp
Phase at STPsolidsolid
Electron configuration[Ar]4s23d104p3[Xe]6s24f145d106p3
Oxidation states[-3, -2, -1, 0, 1, 2, 3, 4, 5][-3, -2, -1, 0, 1, 2, 3, 4, 5]
Electronegativity (Pauling)2.182.02
Electron affinity0.81 eV0.942 eV
Density5776 kg/m³9807 kg/m³
Melting point816.85 °C271.4 °C
Boiling point613.85 °C1563.85 °C
Discovery year12501753