Attribute | Nihonium × | Meitnerium × |
---|---|---|
Discovered (year) | 2004 | 1982 |
Atomic number | 113 | 109 |
1↑Group name | Post-transition metal | Transition metal |
Oxidation states | - |
|
Electron configuration | [Rn]5f¹⁴6d¹⁰7s²7p¹ (predicted) | [Rn]7s²5f¹⁴6d⁷ (calculated) |
Atomic mass (u) | 286.182 | 277.154 |
Standard state | Solid (expected) | Solid |
Symbol | Nh | Mt |