Packing density is maximum for _______?

Review the verified answer and explanation for this SPSC – Sindh Public Service Commission past-paper question on CampusFin.

Packing density is maximum for _______? Answer: Face centered cubic lattice

Packing density is maximum for the face-centered cubic (FCC) structure and other highly symmetric arrangements like hexagonal close-packed (HCP) structures, achieving a maximum packing density of about 74% for monosized spheres. In contrast, simpler structures like simple cubic have lower efficiency, and arrangements of multi-sized particles can achieve even higher packing densities by filling empty spaces.