Polonium is a highly radioactive, silvery-gray metalloid from the periodic table. It is extremely rare and is only found in trace amounts in nature. Polonium is used in nuclear reactors and as a source of heat in space probes.
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| Atomic number | 84 |
| Group | VIA |
| Period | 6 |
| Mass | 209 |
| Latin name | Polonium |
| Electron configuration | [Hg]6p4 |
| Oxidation state | -1, 0, 2, 4, 5, 6 |