Are all the five bonds in `PCI_(5)` equivalent ? Justify.

Explanation

To determine whether all five bonds in phosphorus pentachloride (PCl₅) are equivalent, we need to analyze the molecular structure and hybridization of PCl₅.

### Step-by-Step Solution:

1. **Identify the Hybridization**:
- PCl₅ has a phosphorus atom at the center surrounded by five chlorine atoms. The hybridization of phosphorus in PCl₅ is **sp³d**. This indicates that one s orbital, three p orbitals, and one d orbital are mixed to form five equivalent hybrid orbitals.

2. **Determine the Molecular Geometry**:
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