Maximum number of nitrogen atoms occur in

Options

A. Guanine
B. Uric acid
C. Urea
D. Ammonia.

Explanation

To determine which compound contains the maximum number of nitrogen atoms, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Identify the Compounds**: The compounds we need to analyze are:
- Guanine
- Uric Acid
- Urea
- Ammonia

2. **Analyze Guanine**:
- Guanine is a nitrogenous base.
- Its molecular formula is C5H5N5O.
- **Nitrogen Atoms**: 5 nitrogen atoms.

3. **Analyze Uric Acid**:
- Uric Acid is also a nitrogenous compound.
- Its molecular formula is C5H4N4O3.
- **Nitrogen Atoms**: 4 nitrogen atoms.

4. **Analyze Urea**:
- Urea is a simple nitrogen-containing compound.
- Its molecular formula is CH4N2O.
- **Nitrogen Atoms**: 2 nitrogen atoms.

5. **Analyze Ammonia**:
- Ammonia is a basic nitrogen compound.
- Its molecular formula is NH3.
- **Nitrogen Atoms**: 1 nitrogen atom.

6. **Compare the Number of Nitrogen Atoms**:
- Guanine: 5 nitrogen atoms
- Uric Acid: 4 nitrogen atoms
- Urea: 2 nitrogen atoms
- Ammonia: 1 nitrogen atom

7. **Conclusion**:
- The compound with the maximum number of nitrogen atoms is **Guanine**, with a total of 5 nitrogen atoms.

### Final Answer:
The maximum number of nitrogen atoms occurs in **Guanine**.

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