Antimony vs Bismuth

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PropertySb AntimonyBi Bismuth
Atomic number5183
SymbolSbBi
NameAntimonyBismuth
Categorymetalloidpost-transition-metal
Standard Atomic Weight121.76 u208.9804 u
Period56
Group1515
Blockpp
Phase at STPsolidsolid
Electron configuration[Kr]5s24d105p3[Xe]6s24f145d106p3
Oxidation states[-3, -2, -1, 0, 1, 2, 3, 4, 5][-3, -2, -1, 0, 1, 2, 3, 4, 5]
Electronegativity (Pauling)2.052.02
Electron affinity1.07 eV0.942 eV
Density6685 kg/m³9807 kg/m³
Melting point630.63 °C271.4 °C
Boiling point1586.85 °C1563.85 °C
Discovery year17071753