Boron vs Oxygen
| Property | B Boron | O Oxygen |
|---|---|---|
| Atomic number | 5 | 8 |
| Symbol | B | O |
| Name | Boron | Oxygen |
| Category | metalloid | nonmetal |
| Standard Atomic Weight | 10.8135 u | 15.9994 u |
| Period | 2 | 2 |
| Group | 13 | 16 |
| Block | p | p |
| Phase at STP | solid | gas |
| Electron configuration | [He]2s22p1 | [He]2s22p4 |
| Oxidation states | [-5, -1, 0, 1, 2, 3] | [-2, -1, 0, 1, 2] |
| Electronegativity (Pauling) | 2.04 | 3.44 |
| Electron affinity | 0.27972 eV | 1.4611 eV |
| Density | 2370 kg/m³ | 1.429 kg/m³ |
| Melting point | 2074.85 °C | -218.79 °C |
| Boiling point | 3999.85 °C | -182.95 °C |
| Discovery year | 1808 | 1771 |