N₃, also known as the azide ion, is a linear molecule composed of three nitrogen atoms. It is represented by the chemical formula N₃⁻ and carries a negative charge. The azide ion is known for its stability in certain conditions and is often used in organic chemistry and materials science. In addition to its chemical significance, N₃ is a key component in the synthesis of various compounds, including explosives like trinitrotoluene (TNT). Its unique structure allows it to participate in a variety of chemical reactions, making it valuable in both industrial and research applications.