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  4. In electrophilic aromatic substitution reactions of chlorobenzene, the ortho/para- directing ability of chlorine is due to its

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Q. In electrophilic aromatic substitution reactions of chlorobenzene, the ortho/para- directing ability of chlorine is due to its

KVPYKVPY 2017

Solution:

In electrophilic aromatic substitution reaction of chlorobenzene, the ortho/para directing ability of chlorine is due to its $+R$-effect. The resonating structures of chlorobenzene are as follows :
image
Due to this effect, the electron density increases more at ortho and para-positions than at meta- position.