Which of the following ketones has the maximu | vedclass

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(C) The dipole moment of a molecule is related to the polarity of its bonds and the presence of resonance structures that contribute to charge separat

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cycloprop$-2-$en$-1-$one

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(C) The dipole moment of a molecule is related to the polarity of its bonds and the presence of resonance structures that contribute to charge separation. In cycloprop$-2-$en$-1-$one,the oxygen atom pulls electrons from the double bond,leading to a resonance structure where the ring becomes aromatic (cyclopropenyl cation,$2\pi$ electrons,$H$ückel's rule $4n+2$ with $n=0$). This resonance structure is highly stable,resulting in significant charge separation $(C^{\delta+} = O^{\delta-})$,which gives the molecule a very high dipole moment compared to the other non-aromatic ketones listed.

Which of the following ketones has the maximum dipole moment?

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