Question

what is the general formula for a secondary amine?
rnh₂
h₂nrnh₂
rn₂h
r₂nh

Explanation:

A secondary amine has two organic - groups (R) attached to the nitrogen atom. The general formula for a secondary amine is $R_2NH$, where R represents an alkyl or aryl group. $RNH_2$ is a primary amine, $H_2NRNH_2$ is a diamine, and $RN_2H$ is not a common amine - related formula.

Answer:

$R_2NH$