What is the percentage of unoccupied space in fcc unit cell?

What is the percentage of unoccupied space in fcc unit cell?
  1. $74 \%$
  2. $26 \%$
  3. $68 \%$
  4. $32 \%$

Solution

For fcc unit cell, Packing efficiency $=74 \%$ $\therefore$ Unoccupied space $=26 \%$

Asked in: MHT CET 2020 (19 Oct Shift 2)

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