Attribute | Hassium × | Meitnerium × |
---|---|---|
Discovered (year) | 1984 | 1982 |
Atomic number | 108 | 109 |
Group name | Transition metal | Transition metal |
Oxidation states |
|
|
Electron configuration | [Rn]7s²5f¹⁴6d⁶ | [Rn]7s²5f¹⁴6d⁷ (calculated) |
Atomic mass (u) | 269.1336 | 277.154 |
1↑Standard state | Solid | Solid |
Symbol | Hs | Mt |