[Olympiad] A metal crystallizes in a face-centered cubic (FCC) lattice. What is the packing efficiency of this unit cell?

  1. 52%
  2. 68%
  3. 74%
  4. 78%

📝 Batafsil tushuntirish

FCC (Face-Centered Cubic) has the highest packing efficiency among the cubic systems, which is approximately 74%. (BCC is 68%, Simple Cubic is 52%).
23 / 50 (46%)
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