Iodine vs Bismuth

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PropertyI IodineBi Bismuth
Atomic number5383
SymbolIBi
NameIodineBismuth
Categoryhalogenpost-transition-metal
Standard Atomic Weight126.90447 u208.9804 u
Period56
Group1715
Blockpp
Phase at STPsolidsolid
Electron configuration[Kr]5s24d105p5[Xe]6s24f145d106p3
Oxidation states[-1, 1, 2, 3, 4, 5, 6, 7][-3, -2, -1, 0, 1, 2, 3, 4, 5]
Electronegativity (Pauling)2.662.02
Electron affinity3.059 eV0.942 eV
Density4930 kg/m³9807 kg/m³
Melting point113.7 °C271.4 °C
Boiling point184.4 °C1563.85 °C
Discovery year18111753