Nitrogen vs Radium
| Property | N Nitrogen | Ra Radium |
|---|---|---|
| Atomic number | 7 | 88 |
| Symbol | N | Ra |
| Name | Nitrogen | Radium |
| Category | nonmetal | alkaline-earth-metal |
| Standard Atomic Weight | 14.006855 u | 226 u |
| Period | 2 | 7 |
| Group | 15 | 2 |
| Block | s | s |
| Phase at STP | gas | solid |
| Electron configuration | 2s2.2p3 | [Rn]7s2 |
| Oxidation states | [-3, -2, -1, 0, 1, 2, 3, 4, 5] | [2] |
| Electronegativity (Pauling) | 3.04 | 0.9 |
| Electron affinity | -0.07 eV | 0.096 eV |
| Density | 1.2506 kg/m³ | 5000 kg/m³ |
| Melting point | -210 °C | 699.85 °C |
| Boiling point | -195.79 °C | 1139.85 °C |
| Discovery year | 1772 | 1898 |