Roentgenium |
| Symbol | Rg |
|---|---|
| Latin name | Roentgenium |
| Atomic number | 111 |
| Period | 7 |
| Element category | Transition elements |
| Relative atomic mass | 281 |
| Group | I.B |
| Oxidation numbers | 3 |
| Electron configuration | 5f14 6d9 7s2 |
| State | Solid |
| Discovery | 1994 |
| Stable isotopes | 0 |
| Unstable isotopes | 5 |