Attribute | Dubnium × | Meitnerium × |
---|---|---|
Discovered (year) | 1967 | 1982 |
Atomic number | 105 | 109 |
Group name | Transition metal | Transition metal |
Oxidation states |
|
|
1↑Electron configuration | [Rn]7s²5f¹⁴6d³ | [Rn]7s²5f¹⁴6d⁷ (calculated) |
Atomic mass (u) | 268.126 | 277.154 |
Standard state | Solid | Solid |
Symbol | Db | Mt |