Which of the following isomers of C_8H_9NO is | vedclass

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(D) The basicity of an amine depends on the availability of the lone pair of electrons on the nitrogen atom.In $o-$,$m-$,and $p-$aminoacetophenone,the

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Acetanilide

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(D) The basicity of an amine depends on the availability of the lone pair of electrons on the nitrogen atom.In $o-$,$m-$,and $p-$aminoacetophenone,the lone pair on the nitrogen atom of the $-NH_2$ group is available for protonation,although it is involved in resonance with the benzene ring.In Acetanilide $(C_6H_5NHCOCH_3)$,the lone pair on the nitrogen atom is involved in resonance with the carbonyl group $(-C=O)$ of the acetyl group,forming a stable amide structure: $C_6H_5-NH-C(=O)CH_3 \leftrightarrow C_6H_5-NH^+=C(O^-)CH_3$.This strong resonance with the electron-withdrawing carbonyl group significantly reduces the electron density on the nitrogen atom,making it much less available for protonation compared to the amino group in the other isomers.Therefore,Acetanilide is the weakest base among the given options.

Which of the following isomers of $C_8H_9NO$ is the weakest base?

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