Number of atoms in a simple cubic unit call and Body Centred cubic unit cell

The video tutorial explains the structure and atom distribution in cubic unit cells, focusing on simple and body-centered cubic unit cells. It describes how atoms are positioned and shared among unit cells, calculating the total number of atoms in each type of unit cell. The simple cubic unit cell has atoms at each corner, contributing 1/8 of an atom per unit cell, resulting in one atom per unit cell. The body-centered cubic unit cell has additional atoms at the center, leading to a total of two atoms per unit cell.

What is the geometric shape of a simple cubic unit cell?

• A tetrahedron

• A cube

• A sphere

• A pyramid

How many atoms are effectively present in a simple cubic unit cell?

• One atom

• Eight atoms

• Two atoms

• Four atoms

In a simple cubic unit cell, what fraction of each corner atom belongs to the unit cell?

• 1/16

• 1/8

• 1/2

• 1/4

How many atoms are present in a body-centered cubic unit cell?

• One atom

• Two atoms

• Three atoms

• Four atoms

Where is the additional atom located in a body-centered cubic unit cell?

• At the center of the cube

• At the edge of the cube

• At the face of the cube

• At the corner of the cube