In the compound AX, the radius of ` A^(+)` ion is 95 pm and that of ` X^(-)` ion is 181 pm. Predict the crystal structure of AX and write the coordination number of each of the ions.

Explanation

To determine the crystal structure of the compound AX and the coordination number of each of the ions, we can follow these steps:

### Step 1: Identify the ionic radii
- The radius of the cation \( A^+ \) is given as 95 pm.
- The radius of the anion \( X^- \) is given as 181 pm.

### Step 2: Calculate the ratio of ionic radii
- We need to calculate the ratio of the radius of the cation to the radius of the anion:
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