Short Answer TypeWhy are haloarenes more stable than haloalkanes and undergo electrophilic substitution at o- and p-position?
Haloarenes are more stable because they can donate their lone pair of electrons inside the rings for resonance. Due to resonance, the electron density increase more at ortho and para position. Also, the halogen atom have –I effect and having a tendency to withdraw electrons from the benzene ring. As a result, the ring gets deactivated as compare to benzene and hence the electrophilic substitution reaction occur.
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