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30
Zn
65.38
Zinc
Transition metals · Group 12 · Period 4
More than half of all zinc goes into galvanising steel against corrosion. Alloyed with copper it forms the brasses — see the copper powder guide for the other half of that alloy system.
Atomic properties
| Atomic number | 30 |
|---|---|
| Symbol | Zn |
| Standard atomic weight | 65.38 |
| Classification | Transition metals |
| Group | 12 |
| Period | 4 |
| Block | d-block |
| Electron configuration | [Ar] 3d10 4s2 |
| Electronegativity (Pauling) | 1.65 |
| Common oxidation states | +2 |
Physical properties
| Phase at 20 °C | Solid |
|---|---|
| Density | 7.14 g/cm³ |
| Melting point | 419.53 °C |
| Boiling point | 907 °C |
| Discovered | 1746 |
| CAS number | — |