Ru
Ruthenium
Element 44 · Transition metal · Period 5, Group 8
Solid · Discovered 1827
Atomic Properties
| Atomic Number | 44 |
| Atomic Mass | 101.1u |
| Electron Configuration | [Kr]5s1 4d7 |
| Electronegativity | 2.2Pauling |
| Atomic Radius | 207pm |
| Ionization Energy | 7.361eV |
| Electron Affinity | 1.05eV |
| Oxidation States | +3 |
Physical Properties
| Standard State | Solid |
| Melting Point | 2607K |
| Boiling Point | 4423K |
| Density | 12.1g/cm³ |
| Group Block | Transition metal |
| Year Discovered | 1827 |