Lead (Pb)
Plumbum
Lead (Pb) is a post-transition metal in period 6, group 14. Its relative atomic mass is 207.2 and the molar mass of the atom is 207.2 g/mol.
Atomic number 82
Atomic mass 207.2
Molar mass 207.2 g/mol
Category Post-transition metal Solid
Properties of lead
| Atomic number | 82 |
|---|---|
| Symbol | Pb |
| Latin name | Plumbum |
| Relative atomic mass | 207.2 |
| Molar mass | 207.2 g/mol |
| Group, period, block | 14, 6, p |
| Category | Post-transition metal |
| State at 20 °C | Solid |
| Electron configuration | [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p² |
| Electronegativity (Pauling) | 2.33 |
| Atomic radius | 180 pm |
Electron configuration of lead
Electrons per shell
K2L8M18N32O18P4
Full notation
1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d¹⁰ 6s² 6p²
Noble-gas notation
82 protons · 82 electrons[Xe] 4f¹⁴ 5d¹⁰ 6s² 6p²
Formula and compounds of lead
Simple substancePbleadMolar mass of Pb: 207.2 g/mol
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Frequently asked questions
The relative atomic mass of lead is 207.2, so the molar mass of the atom is 207.2 g/mol.
Full: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d¹⁰ 6s² 6p². Noble-gas notation: [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p².