Identify the incorrect statement with respect to `XeF_(2)`

Options

A. It is a colourless crystalline compound which sublimes at 298 K
B. `BrO_(3)^(-)` being good oxidising agent cannot be oxidised by `XeF_(2)` to `BrO_(4)^(-)`
C. It undergoes hydrolysis more rapidly with alkali in comparison to water.
D. `XeF_(2)` can be prepared by heating Xenon with `O_(2)F_(2)` at `118^(@)C`

Answer

To identify the incorrect statement with respect to \( \text{XeF}_2 \), we will analyze each of the provided statements one by one.

### Step-by-Step Solution:

1. **Statement A**: "It is a colorless crystalline compound which sublimates at 298 Kelvin."
- **Analysis**: This statement is true. \( \text{XeF}_2 \) is indeed a colorless crystalline compound and it sublimates at room temperature (298 K). Therefore, this statement is correct.

2. **Statement B**: "BrO3⁻ being a good oxidizing agent cannot be oxidized by XeF2 to BrO4⁻."
- **Analysis**: This statement is false. \( \text{XeF}_2 \) can oxidize \( \text{BrO}_3^- \) to \( \text{BrO}_4^- \). Therefore, this statement is incorrect and is the one we are looking for.

3. **Statement C**: "It undergoes hydrolysis more rapidly with alkali as compared to water."
- **Analysis**: This statement is true. \( \text{XeF}_2 \) reacts more rapidly with alkali (like NaOH) than with water. The reaction with NaOH is faster, producing \( \text{Xe} \), \( \text{O}_2 \), \( \text{NaF} \), and \( \text{H}_2\text{O} \). The hydrolysis with water is comparatively slower, producing \( \text{Xe} \), \( \text{HF} \), and \( \text{O}_2 \). Thus, this statement is correct.

4. **Statement D**: "XeF2 can be prepared by heating xenon with O2F2 at 180 degrees Celsius."
- **Analysis**: This statement is also true. \( \text{XeF}_2 \) can indeed be synthesized by heating xenon with \( \text{O}_2\text{F}_2 \) at 180 °C. Therefore, this statement is correct.

### Conclusion:
The incorrect statement with respect to \( \text{XeF}_2 \) is **Statement B**.

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