'N' represents nitrogen on the periodic table. It is a non-metal element with atomic number 7. Nitrogen is essential for life, as it is a major component of amino acids, proteins, and nucleic acids such as DNA and RNA. In its gaseous form, nitrogen makes up about 78% of the Earth's atmosphere. It is largely inert, meaning it doesn’t usually react with other elements, but it can form compounds with hydrogen, oxygen, and carbon when under certain conditions. Nitrogen is also important in various industrial processes, including the production of fertilizers and explosives, making it a vital element in agriculture and manufacturing.