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 |