The basicity of aniline is less than that of cyclohexylamine. This is due to

Options

A. `+R` - effect of `-NH_(2)` group
B. `-I` effect of `-NH_(2)` group
C. `-R` effect of `-NH_(2)` group
D. hyperconjugation effect

Answer

A

Explanation

`-NH_(2)` has a `+R` effect, it donates electrons to the benzene ring. As a result of resonance, the lone pair of electrons on the N atom gets delocalized over the benzene ring and thus it is less readily available for protonation. Hence aniline is a weaker base than cyclohexyl amine.