Show that in a cubic close packed structure eight tetrahedral voids are present per unit cell .

Explanation

To show that there are eight tetrahedral voids present per unit cell in a cubic close-packed (CCP) structure, we can follow these steps:

### Step 1: Understand the Structure of CCP
In a cubic close-packed structure, also known as face-centered cubic (FCC), the arrangement of atoms is such that they occupy the corners and the centers of the faces of the cube.

### Step 2: Determine the Number of Atoms in the Unit Cell
In a CCP structure, the total number of effective atoms per unit cell is 4. This is calculated as follows:
- There are 8 corner atoms, each contributing \( \frac{1}{8} \) of an atom to the unit cell (since each corner atom is shared by 8 unit cells).
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