Gallium
Post-transition metal| Atomic number | 31 |
|---|---|
| Category | Post-transition metal |
| Atomic mass | 69.723 |
| Electron configuration | [Ar]3d¹⁰ 4s² 4p¹ |
| Oxidation states | +3 |
| Electronegativity | 1.81 |
| Melting point | 29.8 °C |
| Boiling point | 2,204 °C |
| Density | 5.91 g/cm³ |
| Crystal structure | Orthorhombic |
| Group | 13 |
| Period | 4 |
| Block | p |
| Discovered | 1,875 |
| Crustal abundance | 19 ppm |
