7
N
Nitrogen
Nitrogen
Nitrogen (N)
Reactive Nonmetals · Gas · Period 2 · Group 15
Element Properties
- Atomic Number
- 7
- Symbol
- N
- Atomic Mass
- 14.007
- Category
- Reactive Nonmetals
- Standard State
- Gas
- Period
- 2
- Group
- 15
- Electronegativity
- 3.04
- Atomic Radius
- 155
- Ionization Energy
- 14.53
- Electron Affinity
- —
- Oxidation States
- +5, +4, +3, +2, +1, -1, -2, -3
- Melting Point
- 63.15 K (-210 °C)
- Boiling Point
- 77.36 K (-195.79 °C)
- Density
- 0.001251
- Electron Configuration
- [He] 2s2 2p3
- Year Discovered
- 1772
Electron shells
[He] 2s2 2p3
Electrons are arranged in shells (principal energy levels) around the nucleus. The diagram is a schematic — orbitals in the same shell are not drawn separately.
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Frequently asked questions
What is the atomic number of Nitrogen?
The atomic number of Nitrogen is 7, which equals the number of protons in its nucleus.
What is the atomic mass of Nitrogen?
The atomic mass of Nitrogen is approximately 14.007 u (one twelfth of the mass of a carbon-12 atom).
What is the electron configuration of Nitrogen?
The electron configuration of Nitrogen is [He] 2s2 2p3.
Where is Nitrogen in the periodic table?
Nitrogen is located in period 2, group 15.
When was Nitrogen discovered?
Nitrogen was discovered in 1772.
Related elements
Same group
15
P
Phosphorus
30.974
33
As
Arsenic
74.922
51
Sb
Antimony
121.76
83
Bi
Bismuth
208.98
115
Mc
Moscovium
290.196