Which of the following compound does not give oxyacid of central atom on hydrolysis?

Options

A. `SlCl_(4)`
B. `NC l_(3)`
C. `PC l_(3)`
D. `PC l_(5)`

Answer

To determine which compound does not yield an oxyacid of the central atom upon hydrolysis, we will analyze the hydrolysis reactions of the given compounds step by step.

### Step-by-Step Solution:

1. **Identify the Compounds**:
The compounds we need to analyze are SiCl4, NCl3, PCl3, and PCl5.

2. **Hydrolysis of SiCl4**:
- **Reaction**: SiCl4 + 4H2O → Si(OH)4 + 4HCl
- **Result**: This reaction produces Si(OH)4, which is known as silicic acid.
- **Conclusion**: SiCl4 gives an oxyacid.

3. **Hydrolysis of NCl3**:
- **Reaction**: NCl3 + 3H2O → NH3 + 3HOCl
- **Result**: This reaction produces NH3 (ammonia) and HOCl (hypochlorous acid).
- **Conclusion**: NCl3 does not produce an oxyacid of nitrogen; instead, it yields ammonia.

4. **Hydrolysis of PCl3**:
- **Reaction**: PCl3 + 3H2O → H3PO3 + 3HCl
- **Result**: This reaction produces H3PO3 (phosphorous acid).
- **Conclusion**: PCl3 gives an oxyacid.

5. **Hydrolysis of PCl5**:
- **Reaction**: PCl5 + 4H2O → H3PO4 + 5HCl
- **Result**: This reaction produces H3PO4 (phosphoric acid).
- **Conclusion**: PCl5 gives an oxyacid.

6. **Final Conclusion**:
- Among the compounds analyzed, NCl3 is the only compound that does not yield an oxyacid of the central atom upon hydrolysis. Therefore, the answer to the question is **NCl3**.