Home Chemistry Solid State General Percentages of free space in cubic close pac…
Chemistry Solid State General Single Correct MCQ
Published on: August 14, 2026

Percentages of free space in cubic close packed structure and in body centered packed structure are respectively.

A
30% and 26%
B
26% and 32%
C
32% and 48%
D
48% and 26%

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Verified by Experts
The correct answer is:
B

Packing fraction of CCP = = 0.74 74%

∴ Percentage of free space in CCP = 100 – 74 = 26%

Packing fraction of BCC = = 0.68 68%

∴ Percentage of free space in BCC = 100 – 68 = 32%

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