What is the volume of the unit cell? — Solid State Chemistry Question

💡 Solution & Explanation

In HCP, $Z = 6$. Density $d = \frac{Z \times M}{N_A \times V} \implies V = \frac{6 \times 24}{6 \times 10^{23} \times 1.92} = \frac{24}{1.92} \times 10^{-23} = 1.25 \times 10^{-22} \text{ cm}^3$. Therefore, correct answer is A.