In the cubic crystal of `CsCl (d = 3.97 g cm^(-3))`, the eight corners are occupied by `Cl^(Θ)` with a `Cs^(o+)` at the centre and vice versa. Calculate the distance between the neighbouring `Cs^(o+)` and `Cl^(Θ)` ions. What is the radius of the two ions? (`Aw` of `Cs = 132.91` and `Cl = 35.45)`

Explanation

To solve the problem step by step, we will follow the instructions given in the video transcript and apply the relevant formulas.

### Step 1: Write down the given data
- Density of CsCl, \( d = 3.97 \, \text{g/cm}^3 \)
- Atomic weight of Cs, \( A_{Cs} = 132.91 \, \text{g/mol} \)
- Atomic weight of Cl, \( A_{Cl} = 35.45 \, \text{g/mol} \)

### Step 2: Calculate the molar mass of CsCl
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