Which of the following is the most stable car | vedclass

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(D) The stability of a carbanion is directly proportional to the electron-withdrawing effect ($-I$ and $-M$ effects) and inversely proportional to the

Vedclass · Accepted Answer

$p-NO_2-C_6H_4-CH_2^-$

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(D) The stability of a carbanion is directly proportional to the electron-withdrawing effect ($-I$ and $-M$ effects) and inversely proportional to the electron-donating effect ($+I$ and $+M$ effects). In the given options,the $-NO_2$ group is a strong electron-withdrawing group ($-I$ and $-M$ effects),which stabilizes the negative charge on the carbanion by dispersing it through resonance and induction. 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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