Attribute | Rutherfordium × | Bohrium × |
---|---|---|
1↑Discovered (year) | 1964 | 1976 |
Atomic number | 104 | 107 |
Group name | Transition metal | Transition metal |
Oxidation states |
|
|
Electron configuration | [Rn]7s²5f¹⁴6d² | [Rn]7s²5f¹⁴6d⁵ |
Atomic mass (u) | 267.122 | 270.133 |
Standard state | Solid | Solid |
Symbol | Rf | Bh |