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JEE Main · 2010 · 11 Apr 2010 · Offline · Solid State

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Percentage of free space in cubic close packed structure and in body centred packed structure are respectively
  1. (A) and
  2. (B) and ✓ Correct
  3. (C) and
  4. (D) and

Answer: (B)

Solution

Cubic close packing fills of space, so the empty space is . Body-centred cubic packing fills , leaving free. The free-space percentages are therefore for cubic close packing and for body-centred cubic.

JEE Main · 2010 · 11 Apr 2010 · Offline · Single correct option

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