Nitrogen vs Erbium
| Property | N Nitrogen | Er Erbium |
|---|---|---|
| Atomic number | 7 | 68 |
| Symbol | N | Er |
| Name | Nitrogen | Erbium |
| Category | nonmetal | lanthanide |
| Standard Atomic Weight | 14.006855 u | 167.259 u |
| Period | 2 | 6 |
| Group | 15 | N/A |
| Block | s | s |
| Phase at STP | gas | solid |
| Electron configuration | 2s2.2p3 | [Xe]6s24f12 |
| Oxidation states | [-3, -2, -1, 0, 1, 2, 3, 4, 5] | [0, 1, 2, 3] |
| Electronegativity (Pauling) | 3.04 | 1.24 |
| Electron affinity | -0.07 eV | 0.312 eV |
| Density | 1.2506 kg/m³ | 9070 kg/m³ |
| Melting point | -210 °C | 1528.85 °C |
| Boiling point | -195.79 °C | 2867.85 °C |
| Discovery year | 1772 | 1843 |