The correct statement regarding the basicity of arylamines is:
Arylamines are generally more basic than alkylamines because the lone-pair electrons of nitrogen are not delocalized by interaction with the aromatic ring -electron system.
Arylamines are generally more basic than alkylamines because of the aryl group +I effect.
Arylamines are generally more basic than alkylamines because the nitrogen atom in arylamines is sp-hybridized.
Arylamines are generally less basic than alkylamines because the nitrogen lone-pair electrons are delocalized by interaction with the aromatic ring -electron system.
Arylamines (like aniline) are less basic than alkylamines. In arylamines, the group is directly attached to the benzene ring. The unshared pair of electrons on the nitrogen atom is in conjugation with the -electron system of the benzene ring and is thus delocalized through resonance. This decreases the electron density on the nitrogen atom, making the lone pair less available for protonation compared to alkylamines, where the alkyl groups exert a +I (electron-donating) effect, increasing the basicity.
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