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Q.
Which of the following is the ratio of packing density of $fcc, bcc$ and cubic structures ?
The Solid State
Solution:
Packing fraction in $fcc, bcc$ and $sc$ are $0.74,0.68$, and $0.52$ respectively.
Ratio $=\frac{0.74}{0.74}: \frac{0.68}{0.74}: \frac{0.52}{0.74}$
$=1: 0.92: 0.70$