From the following formulas, which is not an amines?
A. R3N
B. RNH
C. RNH2
D. R2NH
Amines have the general formula RNH2. Primary amines have the formula RNH2, secondary amines have the formula R2NH, and tertiary amines have the formula R3N. RNH is an amine radical and lacks either an R group or a hydrogen atom.