Potassium vs Mercury
| Property | K Potassium | Hg Mercury |
|---|---|---|
| Atomic number | 19 | 80 |
| Symbol | K | Hg |
| Name | Potassium | Mercury |
| Category | alkali-metal | transition-metal |
| Standard Atomic Weight | 39.0983 u | 200.592 u |
| Period | 4 | 6 |
| Group | 1 | 12 |
| Block | s | s |
| Phase at STP | solid | liquid |
| Electron configuration | [Ar]4s1 | [Xe]6s24f145d10 |
| Oxidation states | [-1, 1] | [-2, 1, 2] |
| Electronegativity (Pauling) | 0.82 | 2 |
| Electron affinity | 0.5014 eV | -0.5 eV |
| Density | 890 kg/m³ | 1.353360e+4 kg/m³ |
| Melting point | 63.38 °C | -38.83 °C |
| Boiling point | 758.85 °C | 356.73 °C |
| Discovery year | 1807 | N/A |