Which of the following compounds is highly re | vedclass

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(B) The reactivity of carbonyl compounds towards nucleophilic addition reactions like $HCN$ addition depends on two factors: steric hindrance and elec

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$HCHO$

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(B) The reactivity of carbonyl compounds towards nucleophilic addition reactions like $HCN$ addition depends on two factors: steric hindrance and electronic effects.$1$. Steric hindrance: Smaller groups around the carbonyl carbon facilitate the attack of the nucleophile $(CN^-)$.$2$. Electronic effects: Electron-withdrawing groups increase the electrophilicity of the carbonyl carbon.Among the given options,$HCHO$ (formaldehyde) has the smallest hydrogen atoms attached to the carbonyl carbon,resulting in the least steric hindrance.Therefore,$HCHO$ is the most reactive towards $HCN$.

Which of the following compounds is highly reactive towards $HCN$?

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