Question

Why single bond is stronger than double or triple bonds?

Answer 1

Pi bonds are weaker than sigma bonds since there is less overlap. Thus, two single bonds are stronger than a double bond, and more energy is needed to break two single bonds than a single double bond. The electron density lies above and below the atoms in a π bond.

Answer 2

$\pi$ bonds are weaker than sigma bonds since there is less overlap. Thus, two single bonds are stronger than a double bond, and more energy is needed to break two single bonds than a single double bond. The electron density lies above and below the atoms in a π bond.