What is the number of atoms per unit cell in a body centred cubic structure ?

Explanation

To find the number of atoms per unit cell in a body-centered cubic (BCC) structure, we can follow these steps:

### Step 1: Understand the BCC Structure
In a body-centered cubic structure, atoms are located at the corners of the cube and one atom is positioned at the center of the cube.

### Step 2: Count the Corner Atoms
A cube has 8 corners. Each corner atom is shared among 8 adjacent unit cells. Therefore, the contribution of each corner atom to the unit cell is:

...