What type of hybridization is involved in `PCI_5` ?

Explanation

To determine the type of hybridization involved in \( \text{PCl}_5 \), we can follow these steps:

### Step 1: Determine the Atomic Number and Electronic Configuration of Phosphorus
- The atomic number of phosphorus (P) is 15.
- Its electronic configuration is \( 1s^2, 2s^2, 2p^6, 3s^2, 3p^3 \).

### Step 2: Identify the Valence Electrons
- The valence shell of phosphorus is the third shell, which contains \( 3s^2 \) and \( 3p^3 \).
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