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