Nitrogen vs Neptunium
| Property | N Nitrogen | Np Neptunium |
|---|---|---|
| Atomic number | 7 | 93 |
| Symbol | N | Np |
| Name | Nitrogen | Neptunium |
| Category | nonmetal | actinide |
| Standard Atomic Weight | 14.006855 u | 237 u |
| Period | 2 | 7 |
| Group | 15 | N/A |
| Block | s | s |
| Phase at STP | gas | solid |
| Electron configuration | 2s2.2p3 | [Rn]7s25f46d1 |
| Oxidation states | [-3, -2, -1, 0, 1, 2, 3, 4, 5] | [2, 3, 4, 5, 6, 7] |
| Electronegativity (Pauling) | 3.04 | 1.36 |
| Electron affinity | -0.07 eV | 0.48 eV |
| Density | 1.2506 kg/m³ | 2.025000e+4 kg/m³ |
| Melting point | -210 °C | 643.85 °C |
| Boiling point | -195.79 °C | 3901.85 °C |
| Discovery year | 1772 | 1940 |