In which of the following compounds are the m | vedclass

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(D) The acidity of methylenic hydrogens $(-CH_2-)$ increases when they are attached to electron-withdrawing groups (EWGs).In $CH_3-CO-CH_2-CN$,the met

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$CH_3-CO-CH_2-CN$

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(D) The acidity of methylenic hydrogens $(-CH_2-)$ increases when they are attached to electron-withdrawing groups (EWGs).In $CH_3-CO-CH_2-CN$,the methylene group is located between two strong EWGs: an acetyl group $(-COCH_3)$ and a cyano group $(-CN)$.This makes these hydrogens the most acidic due to the strong $-I$ and $-M$ effects of both groups,which stabilize the resulting carbanion through resonance.

In which of the following compounds are the methylenic hydrogens the most acidic?

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