84
Po
Polonium
208.9824
2
8
18
32
18
6
8
18
32
18
6
| Property | Value |
|---|---|
| Atomic number | 84 |
| Atomic weight | 208.9824 amu |
| Element family | Semi-metals |
| Electronic configuration | 1s2 |
| Stable and very long lived isotopes | None |
| Previous element | Bismuth |
| Next element | Astatine |
| Density | 9.32 g/cm3 (STP) |
| Melting | 254 °C |
| Boiling | 962 °C |
| Covalent radius | 1.45 Å |
| Van der Waals radius | 1.97 Å |
| Ionic radius | 2.3 Å |
| First ionization potential | 8.417 eV |
| Electron affinity | 1.400 eV |
| Electronegativity | 2 |
| Discovery year | 1898 |
Polonium is an element number 84 from semi-metals family. Its symbol is Po. Polonium atomic weight is 208.9824 amu. Po has no stable or long lived isotopes. Polonium electronic configuration is 1s22s22p63s23p63d104s24p64d104f145s25p65d106s26p4. Sample compounds that contain Polonium are Na3Po4, H3Po4, Ca3(Po4)2, NaH2Po4, Na2H2Po4, Na2HPo4.
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