82Pb207.2
Lead (Pb)
Element 82 · Post-transition metal
Lead (Pb) is a chemical element with atomic number 82. It is classified as a post-transition metal in period 6, group 14 of the periodic table (the p-block). Its standard atomic weight is 207.2 u and its ground-state electron configuration is [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p².
Lead facts
| Atomic number (Z) | 82 |
|---|---|
| Symbol | Pb |
| Standard atomic weight | 207.2 u |
| Category | Post-transition metal |
| Group | 14 |
| Period | 6 |
| Block | p-block |
| Electron configuration | [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p² |
| Electronegativity (Pauling) | 2.33 |
| State at 20 °C | Solid |
| Protons / electrons | 82 / 82 |
| Neutrons (most common isotope, approx.) | 125 |
| Molar mass | 207.2 g/mol |