Polonium (Po) - Element 84 | Properties & Electron Configuration
What is Polonium?
Polonium (Po) is element 84, a post transition metal in period 6, group 16. Its electron configuration is 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d¹⁰ 6s² 6p⁴.
| Atomic Number | 84 |
| Symbol | Po |
| Atomic Mass | 209 u |
| Category | Post Transition Metal |
| Period | 6 |
| Group | 16 |
| Block | p |
| Electron Configuration | 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d¹⁰ 6s² 6p⁴ |
| Short Config | [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p⁴ |
| Electronegativity | 2 |
| Atomic Radius | 190 pm |
| Ionization Energy | 812 kJ/mol |
| Electron Affinity | 136 kJ/mol |
| Phase (STP) | Solid |
Electron Configuration
The full electron configuration of Polonium is 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d¹⁰ 6s² 6p⁴. In noble gas shorthand, this is written as [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p⁴.
Polonium is a p-block element in group 16, period 6.
Periodic Trends
Electronegativity: Polonium has a Pauling electronegativity of 2. Within group 16, electronegativity generally decreases down the group.
Atomic Radius: 190 pm. Across period 6, atomic radius generally decreases left to right as nuclear charge increases.
Ionization Energy: 812 kJ/mol. Ionization energy generally increases across a period and decreases down a group.
View all 118 elements with trend overlays for electronegativity, atomic radius, ionization energy, and electron affinity.
Explore Polonium on the Interactive Periodic TableRelated Topics
Oxygen (O)
Properties of Oxygen - same group as Polonium
Sulfur (S)
Properties of Sulfur - same group as Polonium
Selenium (Se)
Properties of Selenium - same group as Polonium
Cesium (Cs)
Properties of Cesium - same period as Polonium
Barium (Ba)
Properties of Barium - same period as Polonium
Lanthanum (La)
Properties of Lanthanum - same period as Polonium