Bismuth vs Polonium

Side-by-side comparison of Bismuth (Bi, element 83) and Polonium (Po, element 84) by atomic structure and physical properties.

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PropertyBi Bismuth Po Polonium
Atomic number8384
SymbolBiPo
NameBismuthPolonium
Categorypost-transition-metalmetalloid
Standard Atomic Weight208.9804 u209 u
Period66
Group1516
Blockpp
Phase at STPSolidSolid
Electron configuration[Xe]4f145d106s26p3[Xe]4f145d106s26p4
Oxidation states[-3, -2, -1, 0, 1, 2, 3, 4, 5][-2, 2, 4, 5, 6]
Electronegativity (Pauling)2.022
Electron affinity0.942 eV1.4 eV
Density9807 kg/m³9320 kg/m³
Melting point271.4 °C253.85 °C
Boiling point1563.85 °C961.85 °C
Discovery year17531898

Key Differences

PropertyBi BismuthPo Polonium
Standard Atomic Weight208.9804 u ↓ lower209 u ↑ higher
Density9807 kg/m³ ↑ higher9320 kg/m³ ↓ lower
Melting point271.4 °C ↑ higher253.85 °C ↓ lower
Boiling point1563.85 °C ↑ higher961.85 °C ↓ lower
Electronegativity (Pauling)2.02 ↑ higher2 ↓ lower
Electron affinity0.942 eV ↓ lower1.4 eV ↑ higher
Group15 16
Categorypost-transition-metal metalloid
Electron configuration[Xe]4f145d106s26p3 [Xe]4f145d106s26p4
Discovery year1753 1898