Which of the following compounds of xenon cannot be prepared

Options

A. XeF
B. `XeF_(2)`
C. `XeF_(4)`
D. `XeF_(6)`

Explanation

To determine which compound of xenon cannot be prepared, we need to analyze the common compounds of xenon and their preparation methods. The main xenon compounds include:

1. Xenon difluoride (XeF2)
2. Xenon tetrafluoride (XeF4)
3. Xenon hexafluoride (XeF6)
4. Xenon oxytetrafluoride (XeOF4)
5. Xenon trioxide (XeO3)

Now, let's evaluate the preparation methods for each of these compounds:

1. **Xenon difluoride (XeF2)**: This can be prepared by the reaction of xenon with fluorine gas at high temperatures.

2. **Xenon tetrafluoride (XeF4)**: This can also be prepared by reacting xenon with fluorine, but under different conditions (higher fluorine concentration).

3. **Xenon hexafluoride (XeF6)**: This compound can be prepared by reacting xenon with excess fluorine.

4. **Xenon oxytetrafluoride (XeOF4)**: This compound can be synthesized by reacting xenon tetrafluoride with water or hydroxyl compounds.

5. **Xenon trioxide (XeO3)**: This compound is less stable and is not easily prepared under normal conditions. It can be formed under specific conditions, but it is highly unstable and can decompose explosively.

Based on this analysis, the compound that is generally considered difficult or impossible to prepare under normal laboratory conditions is **Xenon trioxide (XeO3)**.

### Final Answer:
Xenon trioxide (XeO3) cannot be prepared.