| Property | Value |
|---|---|
| Atomic number | 44 |
| Atomic weight | 101.072 amu |
| Element family | Transition metals |
| Electronic configuration | 1s2 |
| Stable and very long lived isotopes | 96Ru: 5.52%, 98Ru: 1.88%, 99Ru: 12.7%, 100Ru: 12.6%, 101Ru: 17.0%, 102Ru: 31.6%, 104Ru: 18.7% |
| Previous element | Technetium |
| Next element | Rhodium |
| Density | 12.37 g/cm3 (STP) |
| Melting | 2250 °C |
| Boiling | 3900 °C |
| Covalent radius | 1.25 Å |
| Ionic radius | 0.68 Å |
| Metallic radius | 1.34 Å |
| First ionization potential | 7.361 eV |
| Electron affinity | 1.046 eV |
| Electronegativity | 2.2 |
| Discovery year | 1844 |
| Sample compounds |
|---|
| RuCl3 |
| RuH2(CO)(PPh3)3 |
| RuO2 |
| RuClH(CO)(PPh3)3 |
| RuCl3(H2O)3 |
| RuO4 |
Ruthenium is an element number 44 from transition metals family. Its symbol is Ru. Ruthenium atomic weight is 101.072 amu. Ru stable and long lived isotopes are 96Ru: 5.52%, 98Ru: 1.88%, 99Ru: 12.7%, 100Ru: 12.6%, 101Ru: 17.0%, 102Ru: 31.6%, 104Ru: 18.7%. Ruthenium electronic configuration is 1s22s22p63s23p63d104s24p65s14d7. Sample compounds that contain Ruthenium are RuCl3, RuH2(CO)(PPh3)3, RuO2, RuClH(CO)(PPh3)3, RuCl3(H2O)3, RuO4.
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