Oxygen vs Lead
| Property | O Oxygen | Pb Lead |
|---|---|---|
| Atomic number | 8 | 82 |
| Symbol | O | Pb |
| Name | Oxygen | Lead |
| Category | nonmetal | post-transition-metal |
| Standard Atomic Weight | 15.9994 u | 207.2 u |
| Period | 2 | 6 |
| Group | 16 | 14 |
| Block | p | p |
| Phase at STP | gas | solid |
| Electron configuration | [He]2s22p4 | [Xe]6s24f145d106p2 |
| Oxidation states | [-2, -1, 0, 1, 2] | [-4, -2, -1, 0, 1, 2, 3, 4] |
| Electronegativity (Pauling) | 3.44 | 2.33 |
| Electron affinity | 1.4611 eV | 0.364 eV |
| Density | 1.429 kg/m³ | 1.134200e+4 kg/m³ |
| Melting point | -218.79 °C | 327.46 °C |
| Boiling point | -182.95 °C | 1748.85 °C |
| Discovery year | 1771 | 2021 |