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Lead (Pb)
Atomic number 82 · post
| Atomic number | 82 |
|---|---|
| Atomic mass | 207.2 u |
| Molar mass | 207.2 g/mol |
| Category | post |
| Group / period / block | 14 / 6 / p |
| Electron configuration | [Xe] 4f14 5d10 6s2 6p2 |
| Electrons per shell | 2, 8, 18, 32, 18, 4 |
| Electronegativity (Pauling) | 1.8 |
| Atomic radius | 180.0 pm |
| Density | 11.3 g/cm³ |
| First ionisation energy | 7.4167 eV |
| Melting point | 600.61 K (327.46 °C) |
| Boiling point | 2022.15 K (1749.00 °C) |
| Common oxidation states | +2, +4 |
| Abundance in Earth's crust | 14 ppm |
Uses
Car batteries, radiation shielding
Discovery
Known since ancient times