Germanium is a metalloid element from the periodic table. It has a metallic silver-gray color and appears brittle at room temperature. Germanium is used in fiber-optic cables, transistors and solar cells, as well as high-speed electronics and infrared optics. It is also used as a doping agent in semiconductors, making them more efficient.
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| Atomic number | 32 |
| Group | IVA |
| Period | 4 |
| Mass | 72.63 |
| Latin name | Germanium |
| Electron configuration | [Ar]3d10 4s2 4p2 |
| Oxidation state | -4, -3, -2, -1, 0, 1, 2, 3, 4 |