The 8 : 8 type of packing is present in :

Options

A. `MgF_(2)`
B. `CsCI`
C. KCI
D. NaCI

Explanation

To solve the question regarding the "8:8 type of packing," we need to analyze the types of structures that exhibit this packing ratio. Here’s a step-by-step breakdown of the solution:

### Step 1: Understanding 8:8 Packing
The term "8:8 packing" refers to a coordination number of 8 for both cations and anions in a crystal structure. This means that each cation is surrounded by 8 anions and vice versa.

### Step 2: Identifying Examples
We need to identify compounds that exhibit this type of packing. Common examples include:
- CsCl (Cesium Chloride)
...