7NNitrogen14.007[He] 2s² 2p³
diatomic nonmetal
Nitrogen
Nitrogen is a chemical element with symbol N and atomic number 7. It is the lightest pnictogen and at room temperature, it is a transparent, odorless diatomic gas. Nitrogen is a common element in the universe, estimated at about seventh in total abundance in the Milky Way and the Solar System.
A stylized shell model. Electrons are quantum objects, not particles following these literal paths. Sizes and motion are illustrative.
Electrons by shell
Electron configuration
2s2
2p3
At a glance
- Atomic number
- 7
- Atomic mass
- 14.007 u
- Phase
- Gas
- Density
- 1.251 g/L
- Melting point
- 63.15 K
- Boiling point
- 77.355 K
- First ionization energy
- 1,402.3 kJ/mol
- Electronegativity
- 3.04
- Electron affinity
- -6.8 kJ/mol
- Molar heat capacity
- Unavailable
- Period
- 2
- Appearance
- colorless gas, liquid or solid
Conditions and isotopes affect measured properties. Some properties of short-lived elements are predicted. Electronegativity uses the Pauling scale.
Keep exploring
Explore the stories, imagery, and reference data in more depth. Properties with no value in the reference are marked unavailable.