Nitrogen was discovered by Rutherford in 1772.
It composes 78% by volume of air.
Nitrogen compounds can be found in foods, poisons, fertilizers and explosives.
Ammonia, used in household cleaners, is based on Nitrogen.
The petroleum industry uses liquid Nitrogen to force crude oil to the Earth's surface.
- Atomic Number: 7
- Atomic Weight: 14.01
- Melting Point: -209.86
- Boiling Point: -195.8
- Specific Gravity: 0.808 (liquid) 1.026 (solid)
- Valence(s): 3 or 5
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