For a value of radius ratio between 0.732-1.0, what is the co-ordination number and geometry of crystal ?

Explanation

To determine the coordination number and geometry of a crystal for a radius ratio between 0.732 and 1.0, we can follow these steps:

### Step 1: Understand the Radius Ratio
The radius ratio (r_cation/r_anion) is a crucial factor in determining the structure of ionic solids. In this case, we are given a radius ratio range of 0.732 to 1.0.

### Step 2: Identify the Coordination Number
For a radius ratio between 0.732 and 1.0, the coordination number is typically 8. This means that each cation is surrounded by 8 anions in the crystal structure.

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