Sepehr Gas Kavian: +982146835980, +982146837072 and +989022734708 Nitrogen is a chemical element with the symbol N and atomic number 7. It forms a diatomic nonmetal, colorless, odorless, and tasteless gas (N2), which makes up about 78% of Earth’s atmosphere. N2 gas is classified as an inert gas because it does not readily react with other