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Chemistry Solid State General Single Correct MCQ
Published on: August 14, 2026

A CCP of n spheres of radius r, n spheres of radius 0.414 r and 2n spheres of radius 0.225 r are introduced in the octahedral and tetrahedral void respectively. Therefore packing fraction of the lattice.

A
0.74
B
0.81
C
0.68
D
0.79

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Text Solution

Verified by Experts
The correct answer is:
B

P.F =

P.F =

P.F =

= (1 + 0.070958 + 0.022781)

or P.F = 0.8096 ~ 0.81

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