Which of the following alkali metal chlorides is expected to have the highest melting point
(i) `LiCl` (ii) `KCl` (iii) `RbCl` (iv) `NaCl` .

Explanation

To determine which alkali metal chloride has the highest melting point among LiCl, KCl, RbCl, and NaCl, we can follow these steps:

### Step 1: Understand the Factors Affecting Melting Point
The melting point of ionic compounds is influenced primarily by two factors:
1. The charge on the cation.
2. The ionic radii of the cation and anion.

### Step 2: Analyze the Cations
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