If `NaCl` is doped with `10^(-3)` mol% of `SrCl_(2)`, what is the concentration of cation vacancies?

Explanation

To solve the problem of determining the concentration of cation vacancies in NaCl doped with SrCl₂, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Doping**:
- We are given that NaCl is doped with \(10^{-3}\) mol% of SrCl₂.
- This means for every 100 moles of NaCl, there are \(10^{-3}\) moles of SrCl₂.

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