Question

Is ${\mathrm{NH}}_2$ an amine?

Answer 1

1. ${\mathrm{NH}}_2$ is an amino group.
2. Amine is derived from ammonia$\left({\mathrm{NH}}_3\right)$ by replacing one hydrogen.
3. In other words, we can say that amines are another name for ammonia's inorganic compounds.

Hence, ${\mathrm{NH}}_2$is not an amine.