The only o, p- directing group which is deact | vedclass

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(C) The $o, p-$ directing groups are those that increase the electron density at the ortho and para positions of the benzene ring.Most $o, p-$ directi

Vedclass · Accepted Answer

$-X$ (halogens)

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(C) The $o, p-$ directing groups are those that increase the electron density at the ortho and para positions of the benzene ring.Most $o, p-$ directing groups are activating (e.g.,$-NH_2, -OH, -R$),meaning they increase the rate of electrophilic aromatic substitution.However,halogens $(-X)$ are unique because they are $o, p-$ directing due to the resonance effect ($+M$ effect) but are deactivating due to their strong inductive effect ($-I$ effect),which withdraws electron density from the ring.Therefore,the only $o, p-$ directing group that is deactivating in nature is the halogen group $(-X)$.

The only $o, p-$ directing group which is deactivating in nature is

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