Niobium vs Radon
| Property | Nb Niobium | Rn Radon |
|---|---|---|
| Atomic number | 41 | 86 |
| Symbol | Nb | Rn |
| Name | Niobium | Radon |
| Category | transition-metal | noble-gas |
| Standard Atomic Weight | 92.90637 u | 222 u |
| Period | 5 | 6 |
| Group | 5 | 18 |
| Block | s | p |
| Phase at STP | solid | gas |
| Electron configuration | [Kr]5s14d4 | [Xe]6s24f145d106p6 |
| Oxidation states | [-3, -1, 0, 1, 2, 3, 4, 5] | [0, 2, 6] |
| Electronegativity (Pauling) | 1.6 | N/A |
| Electron affinity | 0.893 eV | -0.7 eV |
| Density | 8570 kg/m³ | 9.73 kg/m³ |
| Melting point | 2476.85 °C | -71.15 °C |
| Boiling point | 4743.85 °C | -61.7 °C |
| Discovery year | 1801 | 1900 |