Which is mismatched regarding the shape?

Options

A. `XeF_(4)`=Square planar
B. `XeOF_(4)`=Square pyramidal
C. `XeF_(6)`=Distorted octahedral
D. `XeO_(3)`=Bent T shape

Answer

To solve the question regarding which molecule's shape is mismatched, we will analyze the hybridization and geometry of each given molecule step by step.

### Step 1: Analyze XeF4
1. **Determine Valence Electrons**: Xenon (Xe) has 8 valence electrons, and there are 4 fluorine (F) atoms, each contributing 1 valence electron.
2. **Calculate Hybridization**:
\[ \text{Hybridization} = \frac{1}{2} \left( \text{Valence electrons of Xe} + \text{Monovalent atoms} - \text{Cationic charge} + \text{Anionic charge} \right) \]
\[ = \frac{1}{2} (8 + 4 + 0 + 0) = \frac{12}{2} = 6 \]
- **Steric Number**: 6 corresponds to sp³d² hybridization.
3. **Shape**: The shape of XeF4 is square planar.

**Conclusion**: This option is correctly matched.

### Step 2: Analyze XeOF4
1. **Determine Valence Electrons**: Xenon has 8, oxygen contributes 2, and there are 4 fluorine atoms.
2. **Calculate Hybridization**:
\[ = \frac{1}{2} (8 + 4 + 0 + 0) = \frac{12}{2} = 6 \]
- **Steric Number**: 6 corresponds to sp³d² hybridization.
3. **Shape**: The shape of XeOF4 is square pyramidal.

**Conclusion**: This option is correctly matched.

### Step 3: Analyze XeF6
1. **Determine Valence Electrons**: Xenon has 8 valence electrons, and there are 6 fluorine atoms.
2. **Calculate Hybridization**:
\[ = \frac{1}{2} (8 + 6 + 0 + 0) = \frac{14}{2} = 7 \]
- **Steric Number**: 7 corresponds to sp³d³ hybridization.
3. **Shape**: The shape of XeF6 is distorted octahedral.

**Conclusion**: This option is correctly matched.

### Step 4: Analyze XeO3
1. **Determine Valence Electrons**: Xenon has 8, and there are 3 oxygen atoms (each contributing 2).
2. **Calculate Hybridization**:
\[ = \frac{1}{2} (8 + 3 \times 2 + 0 + 0) = \frac{14}{2} = 7 \]
- **Steric Number**: 4 corresponds to sp³ hybridization.
3. **Shape**: The shape of XeO3 is trigonal pyramidal.

**Conclusion**: The shape is mismatched in the options given, as it is not bent but trigonal pyramidal.

### Final Answer
The mismatched option regarding the shape is **XeO3**, which is incorrectly labeled as bent.

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