Basicity of aniline is less than methyl amine, because-

Options

A. hyperconjugative effect of Me - group in `MeNH_(2)`
B. resonance effect of phenyl group in aniline
C. molar mass of methylamine is less than that of aniline
D. resonance effect of Me - group in `MeNH_(2)`

Answer

B

Explanation

Lone pair of electrons of N - atom present in aniline undergoes resonance with the `pi` - electron cloud of benzene ring. As a result, the electron density over N - atom decreases and the tendency of N - atom donate its elctron paira `H^(+)` ion also decreases.
In case of methylamine, this kind of resonance or delocalisation of electrons does not take place. As a result, N - atom of methylamine shows higher tendency to donate its lone pair of electrons to `H^(+)` ion. For this reason, basicity of anline is less that that of methylamine.