Assertion : Cyanide (CN^{-}) is a strong nucl | vedclass

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Question

(C) The cyanide ion $(CN^{-})$ is indeed a strong nucleophile because the negative charge is present on the carbon atom,which is less electronegative

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If the Assertion is correct but Reason is incorrect.

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(C) The cyanide ion $(CN^{-})$ is indeed a strong nucleophile because the negative charge is present on the carbon atom,which is less electronegative than nitrogen,making it a good electron donor. Thus,the Assertion is correct.However,chlorobenzene does not undergo nucleophilic substitution with $KCN$ under normal conditions because the $C-Cl$ bond in chlorobenzene acquires partial double bond character due to resonance,making it resistant to nucleophilic attack. Therefore,benzonitrile cannot be prepared by this method. Thus,the Reason is incorrect.

Assertion : Cyanide $(CN^{-})$ is a strong nucleophile.
Reason : Benzonitrile is prepared by the reaction of chlorobenzene with potassium cyanide.

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Assertion : Cyanide $(CN^{-})$ is a strong nucleophile.Reason : Benzonitrile is prepared by the reaction of chlorobenzene with potassium cyanide.