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Zinc (Zn)
Atomic number 30 · transition
| Atomic number | 30 |
|---|---|
| Atomic mass | 65.38 u |
| Molar mass | 65.38 g/mol |
| Category | transition |
| Group / period / block | 12 / 4 / d |
| Electron configuration | [Ar] 3d10 4s2 |
| Electrons per shell | 2, 8, 18, 2 |
| Electronegativity (Pauling) | 1.65 |
| Atomic radius | 135.0 pm |
| Density | 7.134 g/cm³ |
| First ionisation energy | 9.3942 eV |
| Melting point | 692.68 K (419.53 °C) |
| Boiling point | 1180.15 K (907.00 °C) |
| Common oxidation states | +2 |
| Abundance in Earth's crust | 70 ppm |
Uses
Galvanising iron, batteries, brass
Discovery
Known since ancient times