Which functional group has the general formula NH2?A.AmineB.ThiolC.EsterD.Alcohol

1. Break Down the Problem

We need to identify which of the given options corresponds to the functional group with the general formula $\text{NH}_2$.

2. Relevant Concepts

• Amine: Organic compounds derived from ammonia by replacing one or more hydrogen atoms with organic groups. The general formula for a primary amine is $\text{R-NH}_2$.
• Thiol: A functional group containing a sulfur atom bonded to a hydrogen atom (-SH).
• Ester: A derived form of a carboxylic acid where the hydrogen of the hydroxyl group (-OH) is replaced by an alkyl or aryl group, typically represented as $\text{RCOOR'}$.
• Alcohol: Organic compounds containing one or more hydroxyl (-OH) groups bonded to a carbon atom (general formula $\text{R-OH}$).

3. Analysis and Detail

• Looking closely at the options:
  • A. Amine: General formula $\text{R-NH}_2$, where $\text{NH}_2$ indicates the presence of an amine group.
  • B. Thiol: Contains sulfur, not applicable here.
  • C. Ester: Contains a carbonyl group, not applicable here.
  • D. Alcohol: Contains hydroxyl group, not applicable.

4. Verify and Summarize

The option that best matches the functional group $\text{NH}_2$ is option A, Amine.

Final Answer

A. Amine