In solid phase, `XeF_(6)` consists of

Options

A. `XeF_(5)^(+) + F^(-)`
B. `XeF_(4) + F_(2)`
C. `XeF_(5)^(+) + XeF_(2)^(-)`
D. `XeF_(2) + 2F_(2)`

Explanation

To solve the question regarding the solid phase of `XeF_(6)`, we will break it down step by step.

### Step-by-Step Solution:

1. **Understanding the Structure of `XeF_(6)`**:
- `XeF_(6)` consists of one xenon atom (Xe) and six fluorine atoms (F).
- In the solid phase, the structure of `XeF_(6)` is often described as a distorted octahedral geometry. This means that the arrangement of the atoms is not perfectly symmetrical due to the presence of a lone pair of electrons on the xenon atom.

**Hint**: Remember that the geometry can be influenced by lone pairs, which can cause distortion in the ideal shapes.

2. **Identifying the Lone Pair**:
- In `XeF_(6)`, xenon has a total of 8 valence electrons. When it forms bonds with 6 fluorine atoms, it uses 6 of these electrons to form 6 bonds. This leaves 2 electrons, which form a lone pair.
- The presence of this lone pair means that one of the positions in the octahedral structure is occupied by the lone pair instead of a fluorine atom.

**Hint**: Consider how lone pairs affect molecular geometry and the overall shape of the molecule.

3. **Solid Phase Representation**:
- In the solid phase, `XeF_(6)` can be represented as a combination of cations and anions. Specifically, it can dissociate into `XeF_(5)^(+)` (a cation) and `F^(-)` (an anion).
- This means that in the solid state, `XeF_(6)` can be thought of as existing in the form of ionic species.

**Hint**: Think about how ionic compounds are formed and how they can be represented in terms of cations and anions.

4. **Conclusion**:
- Therefore, in the solid phase, `XeF_(6)` consists of `XeF_(5)^(+)` and `F^(-)`. This indicates that the solid structure is made up of these ionic components.

**Hint**: Always check if the compound can be broken down into simpler ionic forms, especially for compounds involving noble gases and halogens.

### Final Answer:
In solid phase, `XeF_(6)` consists of `XeF_(5)^(+)` and `F^(-)`.