A triple bond is a covalent bond in which three pairs of electrons are shared between two atoms. It is the strongest and shortest of the common covalent bonds and consists of one sigma bond and two pi bonds. The N≡N bond in nitrogen (N₂) is a triple bond, which accounts for the molecule's great stability.

叁键是两个原子之间共享三对电子的共价键。它是常见共价键中最强、最短的,由一个 σ 键和两个 π 键组成。氮(N₂)中的 N≡N 键是叁键,这解释了该分子极高的稳定性。