Question

Which of the following compound has least Basic strength?

• A. $C _{6} H _{5} NH _{2}$
• B. $NH _{3}$
• C. $\left( C _{2} H _{5}\right)_{2} NH$
• D. $C _{2} H _{5} NH _{2}$

Answer 1

Answer: (A)

Basic strength a Lone pair Availability. In Aniline $\left( C _{6} H _{5} NH _{2}\right)$ as the lone pair is in conjugation so it is least basic among all given.