Beryllium vs Mercury
| Property | Be Beryllium | Hg Mercury |
|---|---|---|
| Atomic number | 4 | 80 |
| Symbol | Be | Hg |
| Name | Beryllium | Mercury |
| Category | alkaline-earth-metal | transition-metal |
| Standard Atomic Weight | 9.012183 u | 200.592 u |
| Period | 2 | 6 |
| Group | 2 | 12 |
| Block | s | s |
| Phase at STP | solid | liquid |
| Electron configuration | [He]2s2 | [Xe]6s24f145d10 |
| Oxidation states | [0, 1, 2] | [-2, 1, 2] |
| Electronegativity (Pauling) | 1.57 | 2 |
| Electron affinity | -0.52 eV | -0.5 eV |
| Density | 1850 kg/m³ | 1.353360e+4 kg/m³ |
| Melting point | 1286.85 °C | -38.83 °C |
| Boiling point | 2470.85 °C | 356.73 °C |
| Discovery year | 1797 | N/A |