Question

Which of the following compound has least Basic strength?

• A. $C_6{H}_{5}N{H}_2$
• B. $N{H}_3$
• C. ${\left(C_2{H}_5\right)}_{2}NH$
• D. $C_2{H}_{5}N{H}_2$

Answer 1

Answer: (A)

Basic strength a Lone pair Availability. In Aniline $\left(C_6{H}_{5}N{H}_2\right)$ as the lone pair is in conjugation so it is least basic among all given.