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the correct order of the packing effeciency in different types of unit cells is ……….. .

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the correct order of the packing effeciency in different types of unit cells is ……….. .
A. fcc lt bcc lt simple cubic
B. fcc gt bcc gt simple cubic
C. fcc lt bcc gt simple cubic
D. bcc lt fcc gt simple cubic
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Correct Answer - B
Packing efficiency of ccp or fcc =74%
Packing efficiency of bcc = 68%
Packing efficiency of simple cubic =52.4%
Thus, the correct order of the packing efficiency is fcc gt bcc gt simple cubic
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