In which of the following compound, centre atom forms six or more than six hybrid orbitals ?

Options

A. `PCl_(5)`
B. `CO_(3)^(2-)`
C. `SO_(3)`
D. `XeF_(6)`

Explanation

To determine which compound has a central atom that forms six or more hybrid orbitals, we will analyze each option step by step.

### Step 1: Analyze Option A - PCl5
1. **Structure**: PCl5 has a phosphorus (P) atom at the center bonded to five chlorine (Cl) atoms.
2. **Bond Pairs and Lone Pairs**: There are 5 bond pairs and 0 lone pairs.
3. **Hybridization**: The hybridization can be determined using the formula:
\[ \text{Hybridization} = \text{Number of bond pairs} + \text{Number of lone pairs} = 5 + 0 = 5 \]
This corresponds to sp³d hybridization, which uses 5 hybrid orbitals.
4. **Conclusion**: PCl5 does not have six or more hybrid orbitals.

### Step 2: Analyze Option B - CO3²⁻
1. **Structure**: CO3²⁻ (carbonate ion) has a central carbon (C) atom bonded to three oxygen (O) atoms.
2. **Bond Pairs and Lone Pairs**: There are 3 bond pairs and 0 lone pairs.
3. **Hybridization**:
\[ \text{Hybridization} = 3 + 0 = 3 \]
This corresponds to sp² hybridization, which uses 3 hybrid orbitals.
4. **Conclusion**: CO3²⁻ does not have six or more hybrid orbitals.

### Step 3: Analyze Option C - SO3
1. **Structure**: SO3 (sulfur trioxide) has a sulfur (S) atom at the center bonded to three oxygen (O) atoms.
2. **Bond Pairs and Lone Pairs**: There are 3 bond pairs and 0 lone pairs.
3. **Hybridization**:
\[ \text{Hybridization} = 3 + 0 = 3 \]
This corresponds to sp² hybridization, which uses 3 hybrid orbitals.
4. **Conclusion**: SO3 does not have six or more hybrid orbitals.

### Step 4: Analyze Option D - XeF6
1. **Structure**: XeF6 (xenon hexafluoride) has a xenon (Xe) atom at the center bonded to six fluorine (F) atoms.
2. **Bond Pairs and Lone Pairs**: There are 6 bond pairs and 1 lone pair.
3. **Hybridization**:
\[ \text{Hybridization} = 6 + 1 = 7 \]
This corresponds to sp³d³ hybridization, which uses 7 hybrid orbitals.
4. **Conclusion**: XeF6 has six or more hybrid orbitals.

### Final Answer
The compound in which the central atom forms six or more hybrid orbitals is **XeF6**.

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