7Gas
N 14.007 Atomic mass · uNonmetals
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.
Discovery 1772 (Daniel Rutherford)
K2L5
Physical properties
Values for the element in its standard state.
- Density
- 0.001251g/cm³
- Melting point
- 63K
- Boiling point
- 77K
- Atomic radius
- 75pm
- Bonding type
- Diatomic
- Molar heat
- Not available
Inside the atom
Electron arrangement and the energy behind its behavior.
Full electron configuration
1s, 2 electrons; 2s, 2 electrons; 2p, 3 electrons;
[He] represents 2 core electrons. The full view shows them explicitly.
7 electrons Orbital order preserved from source
- Electronegativity
- 3.04Pauling scale
- First ionization energy
- 1,402kJ/mol
- Electron affinity
- 7kJ/mol
- Van der Waals radius
- 155pm
N NitrogenAtomic number 7
1,402kJ/mol
Atomic numberGaps indicate unavailable data
About nitrogen
- Appearance
- Colorless gas, liquid or solid
- Discovery
- 1772 (Daniel Rutherford)
- Data source
- Read the reference
A missing value means it is unavailable in this reference dataset. Values can vary with measurement method and conditions.