Oxygen vs Niobium
| Property | O Oxygen | Nb Niobium |
|---|---|---|
| Atomic number | 8 | 41 |
| Symbol | O | Nb |
| Name | Oxygen | Niobium |
| Category | nonmetal | transition-metal |
| Standard Atomic Weight | 15.9994 u | 92.90637 u |
| Period | 2 | 5 |
| Group | 16 | 5 |
| Block | p | s |
| Phase at STP | gas | solid |
| Electron configuration | [He]2s22p4 | [Kr]5s14d4 |
| Oxidation states | [-2, -1, 0, 1, 2] | [-3, -1, 0, 1, 2, 3, 4, 5] |
| Electronegativity (Pauling) | 3.44 | 1.6 |
| Electron affinity | 1.4611 eV | 0.893 eV |
| Density | 1.429 kg/m³ | 8570 kg/m³ |
| Melting point | -218.79 °C | 2476.85 °C |
| Boiling point | -182.95 °C | 4743.85 °C |
| Discovery year | 1771 | 1801 |