Periodic Table
82
Pb
207.2
Lead
Post-transitionInert pair effect (+2 stable); lead-acid batteries; PbO₂ oxidant.
Electronic Configuration
[Xe] 4f¹⁴ 5d¹⁰ 6s² 6p²or1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 4f¹⁴ 5d¹⁰ 6s² 6p²
Electron shells
2e⁻n=1
8e⁻n=2
18e⁻n=3
32e⁻n=4
18e⁻n=5
4e⁻n=6
Properties
Atomic number
82
Atomic mass
207.2 u
Category
Post-transition
Block / Group / Period
p · 14 · 6
Valence electrons
4
Oxidation states
+2, +4
Electronegativity
2.33
Atomic radius
154 pm
Ionization energy
716 kJ/mol
Electron affinity
35 kJ/mol
Melting point
601 K / 328 °C
Boiling point
2022 K / 1749 °C
Density
11.342 g/cm³
State at 25 °C
solid
Personal Notes
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