Atomic NumberAtomic Number of Polonium
Atomic Number of Polonium is 84.
Chemical symbol for Polonium is Po. Number of protons in Polonium is 84. Atomic weight of Polonium is 209 u or g/mol. Melting point of Polonium is 254 °C and its the boiling point is 962 °C.
» Boiling Point » Melting Point » Abundant » State at STP » Discovery YearAbout Polonium
Polonium is the chemical element which was discovered by Marie Curie in the very end of the 19th century and named after her homeland, Poland. It is a very unstable radioactive metalloid, quite toxic and dangerous to all living organisms. It is very rare in nature and can be obtained from ores of uranium and bismuth. Polonium is used as a material for nuclear reactions as source of neutrons and heat, i.e. for space devices. It is also used for various scientific purposes.
Properties of Polonium Element
| Atomic Number (Z) | 84 |
|---|---|
| Atomic Symbol | Po |
| Group | 16 |
| Period | 6 |
| Atomic Weight | 209 u |
| Density | 9.32 g/cm3 |
| Melting Point (K) | 527 K |
| Melting Point (℃) | 254 °C |
| Boiling Point (K) | 1235 K |
| Boiling Point (℃) | 962 °C |
| Heat Capacity | |
| Abundance | 2×10−10 mg/kg |
| State at STP | Solid |
| Occurrence | Transient |
| Description | Metal |
| Electronegativity (Pauling) χ | 2 |
| Ionization Energy (eV) | 8.417 |
| Atomic Radius | 190pm |
| Covalent Radius | no datapm |
| Valence Electrons | 6 |
| Year of Discovery | 1898 |
| Discoverer | Marie and Pierre Curie |