| Ruthenium ✕ | |
|---|---|
| Symbol | Ru |
| Atomic number | 44 |
| Chemical property | Transition metal |
| Origin o the name | Ruthenia, the New Latin name for Russia |
| Group | 8 |
| Period | 5 |
| Atomic weight (u) | 101.07 |
| Atomic weight uncertainty (u) | 0.02 |
| Density (g/cm³) | 12.37 |
| Melting point (K) | 2607 |
| Boiling point (K) | 4423 |
| Heat capacity (J/(g·K)) | 0.238 |
| Electro-negativity | 2.2 |
| Abundance in earth's crust (mg/kg) | 0.001 |