Consider an ionic solid MX with NaCl structure. Construct a new structure (Z) whose unit cell is constructed from the unit cell of MX following the sequential instructions given below. Neglect the charge balance. 1.Remove all the anions (X) except the central one 2.Replace all the face centered cations (M) by anions (X) 3.Remove all the corner cations (M) 4.Replace the central anion (X) with cation (M)
The value of `(("number of anion s ")/("number of cation s"))` in z is ________.

Explanation

To solve the problem step by step, we will follow the instructions provided in the question regarding the ionic solid MX with NaCl structure.

### Step 1: Remove all the anions (X) except the central one

In the NaCl structure, there are 4 cations (M) and 4 anions (X) in the unit cell. By removing all the anions except the central one, we are left with:

- Number of M positive ions = 4
- Number of X negative ions = 1 (the central one)
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