Meitnerium (Mt)
Meitnerium
Meitnerium (Mt) is an element with unknown chemical properties in period 7, group 9. Its relative atomic mass is [278] and the molar mass of the atom is [278] g/mol.
Atomic number 109
Atomic mass [278] predicted
Molar mass [278] g/mol
Category Unknown properties Unknown
Properties of meitnerium
| Atomic number | 109 |
|---|---|
| Symbol | Mt |
| Latin name | Meitnerium |
| Relative atomic mass | [278] |
| Molar mass | [278] g/mol |
| Group, period, block | 9, 7, d |
| Category | Unknown properties |
| State at 20 °C | Unknown |
| Electron configuration | [Rn] 5f¹⁴ 6d⁷ 7s² |
Electron configuration of meitnerium
Electrons per shell
K2L8M18N32O32P15Q2
Full notation
1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d¹⁰ 5f¹⁴ 6s² 6p⁶ 6d⁷ 7s²
Noble-gas notation
109 protons · 109 electrons[Rn] 5f¹⁴ 6d⁷ 7s²
Formula and compounds of meitnerium
Simple substanceMtmeitneriumMolar mass of Mt: [278] g/mol
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Frequently asked questions
The relative atomic mass of meitnerium is [278], so the molar mass of the atom is [278] g/mol.
Full: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d¹⁰ 5f¹⁴ 6s² 6p⁶ 6d⁷ 7s². Noble-gas notation: [Rn] 5f¹⁴ 6d⁷ 7s².