HARDMCQ SINGLEIChO (Chemistry Olympiad)Inorganic ChemistrySolid stateAchiever Section

Percentage of free space in cubic close packed structure and in body centred packed structure are respectively

A.30 % and 26%

B.26% and 32%✓ Correct

C.32% and 48%

D.48% and 26%

Explanation

Packing fraction of cubic close packing and body centered packing are 0.74 and 0.68 respectively. Therefore the free space are respectively 26% and 32%. Hence the correct answer is option (b).

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