Alkene and alkyne gives electrophilic addition reaction, while benzene gives electrophilic substitution reaction. Give reason.

Alkene and alkyne gives electrophilic addition reaction, while benzene

1.	Alkene and alkyne gives electrophilic addition reaction, while benzene gives electrophilic substitution reaction. Give reason.
Answer» Solution :Due to resonance effect, wide spreaded delocalised `pi`-electron and aromaticity benzene RING is stable, so in benzene substitution reaction occurs easily with respect to addition reaction. Also BREAKING of `pi`-BOND in benzene is DIFFICULT so benzene gives substitution reaction. In substitution reaction, stability of benzene ring remains, sosubstitution reaction occurs easily in comparison to addition reaction. In alkene and alkyne, `pi`-bond easily breaks and hence, it favour the addition reaction.