Atomic packing factor for a material with body centered cubic structure is
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In crystallography, atomic packing factor (APF), packing efficiency or packing fraction is the fraction of volume in a crystal structure that is occupied by constituent particles
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Explanation:
No of atoms in b.c.c unit cell = 2
for BCC a = 4 r 3 where a is side of the cube and r is atomic radius.
HCP: 0.74
Diamond cubic: 0.34
BCC: 0.68
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