Which molecule contains a triple bond and has a bond length of approximately 120 pm?
In C₂H₂ (ethyne), the C#C triple bond has a bond length of ~120 pm, shorter than typical double or single bonds.
Ref: NCERT Class 11 Chemistry > Chapter 4: Chemical Bonding and Molecular Structure > Topic: Ionic Bonding - Lattice Enthalpy and Properties of Ionic Compounds