Nitrogen (N), nonmetallic element of Group 15 [Va] of the periodic table. It is a colourless, odourless, tasteless gas that is the most plentiful element in Earth’s atmosphere and is a constituent of all living matter.
| Group | 15 | Melting point | −210.0°C, −346.0°F, 63.2 K |
| Period | 2 | Boiling point | −195.795°C, −320.431°F, 77.355 K |
| Block | p | Density (g cm−3) | 0.001145 |
| Atomic number | 7 | Relative atomic mass | 14.007 |
| State at 20°C | Gas | Key isotopes | 14N |
| Electron configuration | [He] 2s22p3 | CAS number | 7727-37-9 |
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