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Among FCC structures and HCP structures, which have the highest packing efficiency?

39. Among FCC structures and HCP structures, which have the highest packing efficiency?

1. FCC
2. HCP
3. Both
4. None

Answer

The correct answer is: B) HCP

Explanation

When compared to the face-centered cubic (FCC) structure, the hexagonal close-packed (HCP) structure has higher packing efficiency.