Which one of the following is/are the derivative (s) of ammonia?

Options

A. `CH_3-NH_2`
B.
C. `CH_3-NH- CH_3`
D. All of the above

Answer

To determine which of the given options are derivatives of ammonia (NH3), we need to understand what a derivative of ammonia is. Derivatives of ammonia are compounds that are formed by replacing one or more of the hydrogen atoms in ammonia with organic groups (alkyl or aryl groups).

### Step-by-Step Solution:

1. **Understanding Ammonia**:
Ammonia (NH3) consists of one nitrogen atom bonded to three hydrogen atoms.

2. **Identifying Derivatives**:
Derivatives of ammonia can be formed by substituting one or more hydrogen atoms with alkyl (R-) or aryl (A-) groups. The general formula for a primary amine is R-NH2, for a secondary amine is R2-NH, and for a tertiary amine is R3-N.

3. **Analyzing Options**:
Let's analyze the options provided (assuming they are typical derivatives):
- **Option 1**: CH3-NH2 (Methylamine) - This is a primary amine and a derivative of ammonia.
- **Option 2**: C6H5-NH2 (Aniline) - This is also a primary amine and a derivative of ammonia.
- **Option 3**: (CH3)2NH (Dimethylamine) - This is a secondary amine and a derivative of ammonia.
- **Option 4**: (CH3)3N (Trimethylamine) - This is a tertiary amine and a derivative of ammonia.

4. **Conclusion**:
All the options provided are derivatives of ammonia. Therefore, the answer is that all the options listed are derivatives of ammonia.

### Final Answer:
All of the options provided are derivatives of ammonia.

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