Polonium (Po) — Element 84: Properties & Data | Aladdin Scientific
Polonium(Po) — Element 84
Polonium (Po) is a metalloid with atomic number 84 and atomic mass 208.982. It has melting point 527 K (254 °C), boiling point 1235 K (962 °C), density 9.32 g/cm³. It sits in group 16 and period 6 of the periodic table and was discovered in 1898.
Key facts
| Atomic mass | 208.9824 u |
|---|---|
| Electron configuration | [Xe]6s2 4f14 5d10 6p4 |
| Oxidation states | +4, +2 |
| Electronegativity (Pauling) | 2 |
| Atomic radius (van der Waals) | 197 pm |
| Ionization energy | 8.417 eV |
| Electron affinity | 1.9 eV |
| Melting point | 527 K |
| Boiling point | 1235 K |
| Density | 9.32 g/cm³ |
| Standard state | Solid |
| Year discovered | 1898 |
Frequently asked questions
What is the electron configuration of polonium?
The ground-state electron configuration of polonium is [Xe]6s2 4f14 5d10 6p4.
What group and period is polonium in?
Polonium (Po) is in group 16 and period 6 of the periodic table, classified as a metalloid.
What is the melting point of polonium?
Polonium melts at 527 K (254 °C).
What is the standard state of polonium?
Polonium is a solid at standard temperature and pressure.
Related elements
About this data: property values compiled from IUPAC Standard Atomic Weights (2021), the NIST Atomic Spectra Database, and PubChem. Curated by the Aladdin Scientific technical team. Last reviewed: .