Hydrogen vs Polonium
| Property | H Hydrogen | Po Polonium |
|---|---|---|
| Atomic number | 1 | 84 |
| Symbol | H | Po |
| Name | Hydrogen | Polonium |
| Category | nonmetal | metalloid |
| Standard Atomic Weight | 1.007975 u | 209 u |
| Period | 1 | 6 |
| Group | 1 | 16 |
| Block | s | p |
| Phase at STP | gas | solid |
| Electron configuration | 1s1 | [Xe]6s24f145d106p4 |
| Oxidation states | [-1, 1] | [-2, 2, 4, 5, 6] |
| Electronegativity (Pauling) | 2.2 | 2 |
| Electron affinity | 0.75419 eV | 1.9 eV |
| Density | 0.08988 kg/m³ | 9320 kg/m³ |
| Melting point | -259.34 °C | 253.85 °C |
| Boiling point | -252.87 °C | 961.85 °C |
| Discovery year | 1766 | 1898 |