Attribute | Bohrium × | Dubnium × |
---|---|---|
Discovered (year) | 1976 | 1967 |
Atomic number | 107 | 105 |
Group name | Transition metal | Transition metal |
1↓Oxidation states |
|
|
Electron configuration | [Rn]7s²5f¹⁴6d⁵ | [Rn]7s²5f¹⁴6d³ |
Atomic mass (u) | 270.133 | 268.126 |
Standard state | Solid | Solid |
Symbol | Bh | Db |