Chemistry - Solid State Question with Solution | TestHub

In a body-centered cubic (bcc) unit cell, particles are located at the corners and at the body center.

Number of particles at the corners = $8$

Contribution of each corner particle to the unit cell = $\frac{1}{8}$

Total contribution from corners = $8\times \frac{1}{8}=1$

Number of particles at the body center = $1$

Contribution of the body center particle to the unit cell = $1$

Total number of particles in a bcc unit cell = $1+1=2$

Answer: 2