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