Which of the following is most basic?

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(A) The basicity of amines depends on the availability of the lone pair of electrons on the nitrogen atom. $1$. In $C_6H_5NH_2$ (Aniline),the lone pai

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Cyclohexylamine $(C_6H_{11}NH_2)$

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(A) The basicity of amines depends on the availability of the lone pair of electrons on the nitrogen atom. $1$. In $C_6H_5NH_2$ (Aniline),the lone pair is delocalized into the benzene ring due to resonance,making it the least basic. $2$. In $C_6H_5CH_2NH_2$ (Benzylamine),the lone pair is localized,but the phenyl group exerts an electron-withdrawing inductive effect $(-I)$,reducing basicity compared to aliphatic amines. $3$. In $C_6H_{11}NH_2$ (Cyclohexylamine),the lone pair is localized on the nitrogen atom,and the cyclohexyl group exerts an electron-donating inductive effect $(+I)$,which increases the electron density on the nitrogen atom,making it the most basic among the given options.

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