Question

The most basic $N-$atom is:

• A. $a$
• B. $b$
• C. $c$
• D. $d$

Answer 1

Answer: (C)

The correct option is C $c$
Here the most basic nitrogen atom is $\underset{\left(c\right)}{-NH}$. This is because here nitrogen is attached to the aliphatic carbon atom.

The nitrogen in $\underset{\left(b\right)}{-N{H}_2}$ is in conjugation with aromatic ring thus it does not have enough electron to act as a Lewis base.

Similarly, In nitrogen, $a$ and $d$ the nitrogen is present in the ring thus there is not enough electron available for donation.