Nitrogen is a colorless, odorless, and tasteless gas that makes up about 78% of the Earth’s atmosphere. Its chemical symbol is N₂, and it is a vital element for all living things, playing a key role in the structure of DNA, proteins, and other essential biological molecules.
In industry, nitrogen is used in many applications, such as food preservation, electronics manufacturing, and as a cooling agent in liquid form. Although nitrogen gas is not toxic, it can displace oxygen in enclosed spaces, so it must be handled with care in industrial environments.
