| General |
|---|
| Name | Gallium | | Symbol | Ga | | Number | 31 | | Chemical series | Other metals | | Group / Period | 13 / 4 | | Block | p-block | | CAS registry number | 7440-55-3 |
| Physical properties |
|---|
| State | solid | | Density | 5.91 g/cm3 | | Melting point | 302.9146 K (29.7646 °C, 85.5763 °F) | | Boiling point | 2477 K (2204°C, 3999°F) | | Critical point | |
| Atomic properties |
|---|
| Atomic Weight | 69.723 g/mol | | Crystal structure | orthorhombic | | Electronegativity | 1.81 | | Atomic radius | 126 pm | | Atomic radius (calculated) | 187 pm | | Electron configuration | [Ar] 3d10 4s2 4p1 | | Electrons per shell | 2, 8, 18, 3 | | Number of protons | 31 | | Number of neutrons | 39 |
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Germanium