7N14.007
Nitrogen
Reactive non-metalsPoor conductors that build the molecules of living things and much of the air.
[He] 2s² 2p³
- Atomic number
- 7
- Atomic mass
- 14.007
- Protons
- 7
- Neutrons
- 7 (most common)
- Electrons
- 7
- Shells
- 2, 5
- State at 25 °C
- Gas
- Position
- Group 15, period 2
Proton (+)Neutron (0)Electron (−)
Discovered byDaniel Rutherford, 1772Daniel Rutherford: 1 element
Rutherford removed oxygen and carbon dioxide from air and found a gas left over in which nothing could burn or live.
Did you know?
- Liquid nitrogen boils at −196 °C.
- Your chip packet is puffed up with nitrogen, not air.
Where it's found
- About 78% of the air
- Proteins and DNA
What it's used for
- Fertilisers
- Filling chip packets to keep them fresh
- Liquid nitrogen for freezing
Try it
There's no safe home experiment for Nitrogen. Explore it with the animated atom above instead.