Which of the following statements regarding the packing efficiency of different unit cells are corre — Solid State Chemistry Question

💡 Solution & Explanation

FCC and HCP both have the maximum possible packing efficiency of $74\%$ for identical spheres. The packing fraction derivation for BCC yields $\frac{\sqrt{3}\pi}{8} \approx 0.68$. For Simple Cubic, it is $\frac{\pi}{6} \approx 0.524$.