Polonium (Po)
Polonium
Polonium (Po) is a post-transition metal in period 6, group 16. Its relative atomic mass is [209] and the molar mass of the atom is [209] g/mol.
Atomic number 84
Atomic mass [209] predicted
Molar mass [209] g/mol
Category Post-transition metal Solid
Properties of polonium
| Atomic number | 84 |
|---|---|
| Symbol | Po |
| Latin name | Polonium |
| Relative atomic mass | [209] |
| Molar mass | [209] g/mol |
| Group, period, block | 16, 6, p |
| Category | Post-transition metal |
| State at 20 °C | Solid |
| Electron configuration | [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p⁴ |
| Electronegativity (Pauling) | 2 |
| Atomic radius | 190 pm |
Electron configuration of polonium
Electrons per shell
K2L8M18N32O18P6
Full notation
1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d¹⁰ 6s² 6p⁴
Noble-gas notation
84 protons · 84 electrons[Xe] 4f¹⁴ 5d¹⁰ 6s² 6p⁴
Formula and compounds of polonium
Simple substancePopoloniumMolar mass of Po: [209] g/mol
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Frequently asked questions
The relative atomic mass of polonium is [209], so the molar mass of the atom is [209] g/mol.
Full: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d¹⁰ 6s² 6p⁴. Noble-gas notation: [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p⁴.