Which of the following is the strongest base?

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(D) The basicity of amines depends on the availability of the lone pair of electrons on the nitrogen atom for protonation.In aniline $(C_6H_5NH_2)$,$N

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Benzylamine

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(D) The basicity of amines depends on the availability of the lone pair of electrons on the nitrogen atom for protonation.In aniline $(C_6H_5NH_2)$,$N$-methylaniline $(C_6H_5NHCH_3)$,and $o$-toluidine $(2-CH_3C_6H_4NH_2)$,the lone pair on the nitrogen atom is in conjugation with the benzene ring,which decreases its availability for protonation.In benzylamine $(C_6H_5CH_2NH_2)$,the nitrogen atom is attached to a $CH_2$ group,not directly to the benzene ring. Therefore,the lone pair on the nitrogen atom is not involved in resonance with the benzene ring,making it more available for protonation.Thus,benzylamine is the strongest base among the given options.

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