Which of the following is the most stable car | vedclass

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Question

(B) The stability of a carbanion is increased by electron-withdrawing groups $(-EWG)$ and decreased by electron-donating groups $(-EDG)$ attached to t

Vedclass · Accepted Answer

$p-NO_2-C_6H_4-CH_2^-$

Vedclass · Answer

(B) The stability of a carbanion is increased by electron-withdrawing groups $(-EWG)$ and decreased by electron-donating groups $(-EDG)$ attached to the ring.The $-NO_2$ group is a strong electron-withdrawing group due to both $-I$ and $-M$ effects.The $-Cl$ group is electron-withdrawing due to the $-I$ effect but electron-donating due to the $+M$ effect (overall $-I$ dominates).The $-OCH_3$ group is a strong electron-donating group due to the $+M$ effect.The $-NO_2$ group stabilizes the negative charge on the carbanion most effectively through resonance and inductive effects.Therefore,$p-NO_2-C_6H_4-CH_2^-$ is the most stable carbanion.

Which of the following is the most stable carbanion?

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The correct stability order for the following carbocations is:

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