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

what is the general formula for a secondary amine?\n○ rnh₂\n○ h₂nrnh₂\n○ rn₂h\n○ r₂nh
Answer
Brief Explanations:
A secondary amine has two organic - groups (R) attached to the nitrogen atom and one hydrogen atom attached to the nitrogen. The general formula for a secondary amine is $R_2NH$. $RNH_2$ is a primary amine, $H_2NRNH_2$ is a diamine, and $RN_2H$ is not a common amine - related formula.
Answer:
D. $R_2NH$