A compound made up of elements `A` and `B` crystallizes in the cubic structures. Atoms `A` are present on the corners as well as face centres whereas atoms `B` are present on the edge centres centres as well as body centre. What is the formula of the compound? Draw the structure of its unit cell.

Explanation

To determine the formula of the compound made up of elements A and B that crystallizes in a cubic structure, we need to analyze the positions of the atoms and their contributions within the unit cell.

### Step-by-Step Solution:

1. **Identify the Positions of Atoms:**
- Atoms A are located at the corners and face centers of the cubic unit cell.
- Atoms B are located at the edge centers and the body center of the cubic unit cell.

...