Specifications: Nitrogen Nitrogen is a chemical element that has the symbol N and atomic number 7 and atomic weight 14. Elemental nitrogen is a colorless, odorless, tasteless and mostly inert diatomic gas at standard conditions, constituting 78.1% by volume of Earth's atmosphere. Nitrogen occurs in all living organisms � it is a constituent element of amino acids and thus of proteins, and of nucleic acids (DNA and RNA); resides in the chemical structure of almost all neurotransmitters; and is a defining component of alkaloids, biological molecules produced by many organisms. Many industrially important compounds, such as ammonia, nitric acid, and cyanides, contain nitrogen.
