Attribute | Meitnerium × | Copernicium × |
---|---|---|
Discovered (year) | 1982 | 1996 |
Atomic number | 109 | 112 |
Group name | Transition metal | Transition metal |
Oxidation states |
|
|
Electron configuration | [Rn]7s²5f¹⁴6d⁷ (calculated) | [Rn]7s²5f¹⁴6d¹⁰ (predicted) |
Atomic mass (u) | 277.154 | 286.179 |
1↑Standard state | Solid | Solid (expected) |
Symbol | Mt | Cn |