Polarization of electrons in acrolein may be | vedclass

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(D) Acrolein $(CH_2=CH-CHO)$ is a conjugated system where the $\pi$-electrons are delocalized towards the electronegative oxygen atom. Due to the reso

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$\mathop{C}\limits^{\delta^+}H_2 = CH - CH = \mathop{O}\limits^{\delta^-}$

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(D) Acrolein $(CH_2=CH-CHO)$ is a conjugated system where the $\pi$-electrons are delocalized towards the electronegative oxygen atom. Due to the resonance effect, the electron density shifts from the terminal carbon towards the oxygen atom. The resonance structure is $CH_2=CH-CH=O \leftrightarrow ^+CH_2-CH=CH-O^-$. Consequently, the terminal carbon $(CH_2)$ acquires a partial positive charge $(\delta^+)$ and the oxygen atom acquires a partial negative charge $(\delta^-)$. Thus, the correct representation is $\mathop{C}\limits^{\delta^+}H_2 = CH - CH = \mathop{O}\limits^{\delta^-}$.

Polarization of electrons in acrolein may be written as

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