Why benzene undergoes electrophilic substitution reaction where as alkenes undergoes addition reaction?
Answer»
Benzene possess an unhybridised p-orbital containing one electron. The lateral overlap of theirp-orbitals produces 3 it bond.
The six electron of the p-orbitais cover all the six carbon atoms and arc said to be delocalised.
Due to delocalisation, strong it-bond is formed which makes the molecule stable. Therefore benzene undergoes electrophilic substitution reaction, whereas alkenes undergoes addition reaction.