Hydrogen vs Mercury
| Property | H Hydrogen | Hg Mercury |
|---|---|---|
| Atomic number | 1 | 80 |
| Symbol | H | Hg |
| Name | Hydrogen | Mercury |
| Category | nonmetal | transition-metal |
| Standard Atomic Weight | 1.007975 u | 200.592 u |
| Period | 1 | 6 |
| Group | 1 | 12 |
| Block | s | s |
| Phase at STP | gas | liquid |
| Electron configuration | 1s1 | [Xe]6s24f145d10 |
| Oxidation states | [-1, 1] | [-2, 1, 2] |
| Electronegativity (Pauling) | 2.2 | 2 |
| Electron affinity | 0.75419 eV | -0.5 eV |
| Density | 0.08988 kg/m³ | 1.353360e+4 kg/m³ |
| Melting point | -259.34 °C | -38.83 °C |
| Boiling point | -252.87 °C | 356.73 °C |
| Discovery year | 1766 | N/A |