Periodic Table
83
Bi
208.98
Bismuth
Post-transitionMost stable +3 (inert pair); 'least toxic' heavy metal; diamagnetic.
Electronic Configuration
[Xe] 4f¹⁴ 5d¹⁰ 6s² 6p³or1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 4f¹⁴ 5d¹⁰ 6s² 6p³
Electron shells
2e⁻n=1
8e⁻n=2
18e⁻n=3
32e⁻n=4
18e⁻n=5
5e⁻n=6
Properties
Atomic number
83
Atomic mass
208.98 u
Category
Post-transition
Block / Group / Period
p · 15 · 6
Valence electrons
5
Oxidation states
+3, +5
Electronegativity
2.02
Atomic radius
143 pm
Ionization energy
703 kJ/mol
Electron affinity
91 kJ/mol
Melting point
544 K / 271 °C
Boiling point
1837 K / 1564 °C
Density
9.807 g/cm³
State at 25 °C
solid
Personal Notes
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