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 |