Po
Polonium
Element 84 · Metalloid · Period 6, Group 16
Solid · Discovered 1898
Atomic Properties
| Atomic Number | 84 |
| Atomic Mass | 208.98243u |
| Electron Configuration | [Xe]6s2 4f14 5d10 6p4 |
| Electronegativity | 2Pauling |
| Atomic Radius | 197pm |
| Ionization Energy | 8.417eV |
| Electron Affinity | 1.9eV |
| Oxidation States | +4, +2 |
Physical Properties
| Standard State | Solid |
| Melting Point | 527K |
| Boiling Point | 1235K |
| Density | 9.32g/cm³ |
| Group Block | Metalloid |
| Year Discovered | 1898 |