Which of the following halide does not hydrolyse

Options

A. `SbCl_3`
B. `AsCl_3`
C. `PCl_3`
D. `NF_3`

Explanation

To determine which of the following halides does not hydrolyze, we will analyze each option provided: SbCl3, AsCl3, PCl3, and NF3.

### Step-by-Step Solution:

1. **Understanding Hydrolysis**: Hydrolysis is a chemical reaction involving water, where a compound reacts with water to form new products. In the case of halides, they typically react with water to form corresponding acids and oxides.

2. **Analyzing SbCl3**:
- When SbCl3 is added to water, it hydrolyzes to form antimony oxychloride (SbOCl) and hydrochloric acid (HCl).
- **Reaction**:
\[ \text{SbCl}_3 + \text{H}_2\text{O} \rightarrow \text{SbOCl} + 3 \text{HCl} \]
- **Conclusion**: SbCl3 hydrolyzes.

3. **Analyzing AsCl3**:
- AsCl3 also reacts with water to form arsenous acid (H3AsO3) and hydrochloric acid (HCl).
- **Reaction**:
\[ \text{AsCl}_3 + 3 \text{H}_2\text{O} \rightarrow \text{H}_3\text{AsO}_3 + 3 \text{HCl} \]
- **Conclusion**: AsCl3 hydrolyzes.

4. **Analyzing PCl3**:
- PCl3 reacts with water to produce phosphorous acid (H3PO3) and hydrochloric acid (HCl).
- **Reaction**:
\[ \text{PCl}_3 + 3 \text{H}_2\text{O} \rightarrow \text{H}_3\text{PO}_3 + 3 \text{HCl} \]
- **Conclusion**: PCl3 hydrolyzes.

5. **Analyzing NF3**:
- NF3 does not hydrolyze when it comes in contact with water. The nitrogen-fluorine bond is very strong due to the overlapping of 2p orbitals, making it resistant to hydrolysis.
- **Conclusion**: NF3 does not hydrolyze.

6. **Final Answer**: Among the options, NF3 is the only halide that does not undergo hydrolysis.

### Summary:
The halide that does not hydrolyze is **NF3**.