Which of the following compounds contains a triple bond?

ammonia (NH3)

methane (CH4)

chlorine (Cl2)

acetylene (C2H2)

Acetylene (C2H2) contains a triple bond

The compound that contain a triple bond is acetylene C₂H₂

Explanation

A triple bond is the bond that contain one sigma bond and two Pi bond,

Acetylene (C2H2) is unsaturated with 2 carbon atoms that are bonded together in a triple bond.

carbon - carbon triple bond in Acetylene places all the four atoms in the same straight line with CCH bond angle of 180°