Roentgenium
Unknown properties| Atomic number | 111 |
|---|---|
| Category | Unknown properties |
| Atomic mass | 282 |
| Electron configuration | [Rn]5f¹⁴ 6d⁹ 7s² |
| Oxidation states | Unknown |
| Crystal structure | Unknown |
| Group | 11 |
| Period | 7 |
| Block | d |
| Discovered | 1,994 |
| Crustal abundance | 0 ppm |