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Nitrogen (CAS Num 7727-37-9)
Nitrogen is a chemical element; it has symbol N and atomic number 7. Nitrogen is a nonmetal and the lightest member of group 15 of the periodic table, often called the pnictogens. It is a common element in the universe, estimated at seventh in total abundance in the Milky Way and the Solar System.
Nitrogen is a fascinating element with the symbol N and atomic number 7. It’s a nonmetal and the lightest member of group 15 on the periodic table, often referred to as the pnictogens. Here are some interesting facts about nitrogen:
- Abundance: Nitrogen makes up about 78% of Earth’s atmosphere by volume, making it the most abundant uncombined element in the atmosphere.
- Properties: At standard temperature and pressure, nitrogen is a colorless, odorless, and tasteless gas. It forms diatomic molecules (N₂), meaning two nitrogen atoms are bonded together.
- Uses: Nitrogen is essential for life, as it is a key component of amino acids, proteins, and nucleic acids (DNA and RNA). It’s also used in various industrial applications, such as in the production of ammonia for fertilizers, and as a refrigerant in its liquid form


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