Atomic Properties
- Atomic Number
- 7
- Atomic Mass
- 14.0070 u
- Electron Configuration
- [He] 2s2 2p3
- Electronegativity
- 3.04
- Block
- p-block
- Group
- 15
- Period
- 2
Physical Properties
- Phase (STP)
- gas
- Melting Point
- 63.15 K
- Boiling Point
- 77.36 K
- Density
- 0.0013 g/cm³
About Nitrogen
Makes up 78% of Earth's atmosphere; essential for proteins and DNA.
Isotopes of Nitrogen
Nitrogen has 2 naturally occurring isotopes.
| Isotope | Mass Number | Atomic Mass (u) | Abundance | Type |
|---|---|---|---|---|
| 14N | 14 | 14.003074 | 99.64% | Stable |
| 15N | 15 | 15.0001089 | 0.3640% | Stable |
Data source: NIH PubChem (aggregated from IUPAC, NIST)