Gallium |
| Symbol | Ga |
|---|---|
| Latin name | Gallium |
| Atomic number | 31 |
| Period | 4 |
| Element category | Metals |
| Relative atomic mass | 69.723 |
| Group | III.A |
| Electronegativity | 1.6 |
| Oxidation numbers | 3 |
| Electron configuration | 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p1 |
| Density [g/cm3] | 5.93 |
| State | Solid |
| Melting point [°C] | 29.78 |
| Boiling point [°C] | 2403 |
| Atomic radius [pm] | 135 |
| Covalent radius [pm] | 122 |
| Thermal conductivity [W m-1K-1] | 40.6 |
| Heat capacity [J K-1g-1] | 0.371 |
| Discovery | 1875 |
| Hardness [Mohs scale] | 1.5 |
| Brinell hardness [MPa] | 60 |
| Electrical conductivity [S m-1] | 7.1 · 106 |
| 1.st ionization energy [eV] | 5.9993 |
| 2.nd ionization energy [eV] | 20.51 |
| 3.rd ionization energy [eV] | 30.71 |
| Stable isotopes | 2 |
| Unstable isotopes | 11 |