Germanium |
| Symbol | Ge |
|---|---|
| Latin name | Germanium |
| Atomic number | 32 |
| Period | 4 |
| Element category | Metalloids |
| Relative atomic mass | 72.61 |
| Group | IV.A |
| Electronegativity | 1.8 |
| Oxidation numbers | 2, 4 |
| Electron configuration | 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p2 |
| Density [g/cm3] | 5.32 |
| State | Solid |
| Melting point [°C] | 937.4 |
| Boiling point [°C] | 2830 |
| Thermal conductivity [W m-1K-1] | 59.9 |
| Heat capacity [J K-1g-1] | 0.32 |
| Discovery | 1885 |
| Hardness [Mohs scale] | 6.25 |
| Electrical conductivity [S m-1] | 2 · 103 |
| 1.st ionization energy [eV] | 7.9 |
| 2.nd ionization energy [eV] | 15.934 |
| 3.rd ionization energy [eV] | 34.22 |
| Stable isotopes | 2 |
| Unstable isotopes | 11 |