Francium is a highly radioactive, silvery-white alkali metal from the periodic table. It is extremely rare and is found only in trace amounts in nature. Francium has no commercial applications and is used mainly in scientific research.
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| Atomic number | 87 |
| Group | IA |
| Period | 7 |
| Mass | 223 |
| Latin name | Francium |
| Electron configuration | [Rn]7s |
| Oxidation state | 0, 1 |