Which compound has planar structure:

Options

A. `XeF_(4)`
B. `XeOF_(2)`
C. `XeO_(2)F_(2)`
D. `XeO_(4)`

Answer

To determine which compound has a planar structure among the given options (XeF4, XeOF2, XeO2F2, or XeO4), we will analyze the hybridization and molecular geometry of each compound step by step.

### Step 1: Analyze XeF4
1. **Valence Electrons Calculation**:
- Xenon (Xe) has 8 valence electrons.
- It forms 4 bonds with fluorine (F), which are monovalent.
- Using the formula:
\[ \text{Steric Number} = \frac{(V + M)}{2} = \frac{(8 + 4)}{2} = 6 \]
- This indicates there are 4 bond pairs and 2 lone pairs.

2. **Molecular Geometry**:
- With 4 bond pairs and 2 lone pairs, the shape is square planar.
- **Conclusion**: XeF4 has a planar structure.

### Step 2: Analyze XeOF2
1. **Valence Electrons Calculation**:
- Xenon (Xe) has 8 valence electrons.
- It forms 2 bonds with fluorine and 1 double bond with oxygen.
- Using the formula:
\[ \text{Steric Number} = \frac{(8 + 2)}{2} = 5 \]
- This indicates there are 3 bond pairs and 2 lone pairs.

2. **Molecular Geometry**:
- With 3 bond pairs and 2 lone pairs, the shape is T-shaped.
- **Conclusion**: XeOF2 does not have a planar structure.

### Step 3: Analyze XeO2F2
1. **Valence Electrons Calculation**:
- Xenon (Xe) has 8 valence electrons.
- It forms 2 bonds with fluorine and 1 double bond with oxygen.
- Using the formula:
\[ \text{Steric Number} = \frac{(8 + 4)}{2} = 6 \]
- This indicates there are 4 bond pairs and 1 lone pair.

2. **Molecular Geometry**:
- With 4 bond pairs and 1 lone pair, the shape is see-saw.
- **Conclusion**: XeO2F2 does not have a planar structure.

### Step 4: Analyze XeO4
1. **Valence Electrons Calculation**:
- Xenon (Xe) has 8 valence electrons.
- It forms 4 bonds with oxygen.
- Using the formula:
\[ \text{Steric Number} = \frac{(8 + 0)}{2} = 4 \]
- This indicates there are 4 bond pairs and 0 lone pairs.

2. **Molecular Geometry**:
- With 4 bond pairs and no lone pairs, the shape is tetrahedral.
- **Conclusion**: XeO4 does not have a planar structure.

### Final Conclusion
After analyzing all the compounds, the only compound that has a planar structure is **XeF4**, which has a square planar geometry.