Ruthenium is a chemical element from the periodic table. It is a hard, silvery-white transition metal that is found in many minerals. Ruthenium is used in the production of alloys and electrical contacts, and is also used to create specialized catalysts. It is also used to coat other metals, such as gold and silver, to give them a more durable finish.
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| Atomic number | 44 |
| Group | VIIIB |
| Period | 5 |
| Mass | 101.07 |
| Latin name | Ruthenium |
| Electron configuration | [Kr]4d7 5s |
| Oxidation state | -4, -2, 0, 1, 2, 3, 4, 5, 6, 7, 8 |