Which is not correctly matched ?

Options

A. `XeO_(3)` -Trigonal bipyramidal
B. `ClF_(3)`- bent T-shape
C. `XeOF_(4)`- Square pyramidal
D. `XeF_(2)`- Linear shape

Answer

To determine which option is not correctly matched, we will analyze each option one by one based on the molecular geometry and the given descriptions.

### Step 1: Analyze Option A (XCO3)
- **Given Shape:** Trigonal Bipyramidal
- **Actual Shape:** Trigonal Pyramidal
- **Explanation:** The structure of XCO3 (where X is a central atom) has a trigonal pyramidal shape due to the presence of one lone pair of electrons. The given shape as trigonal bipyramidal is incorrect.

### Step 2: Analyze Option B (CLF3)
- **Given Shape:** Bent T-shape
- **Actual Shape:** Bent T-shape
- **Explanation:** The structure of CLF3 has two lone pairs and three bonded pairs, resulting in a bent T-shape. This matches the given description.

### Step 3: Analyze Option C (XeOF4)
- **Given Shape:** Square Pyramidal
- **Actual Shape:** Square Pyramidal
- **Explanation:** The structure of XeOF4 has four fluorine atoms in the same plane and one lone pair, leading to a square pyramidal shape. This matches the given description.

### Step 4: Analyze Option D (XCF2)
- **Given Shape:** Linear
- **Actual Shape:** Linear
- **Explanation:** The structure of XCF2 has two fluorine atoms and three lone pairs, resulting in a linear shape. This matches the given description.

### Conclusion
After analyzing all options:
- **Option A is not correctly matched** because it states that XCO3 has a trigonal bipyramidal shape, which is incorrect; it actually has a trigonal pyramidal shape.

### Final Answer
The option that is not correctly matched is **A (XCO3 - Trigonal Bipyramidal)**.

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