The atomic packing factor is the highest in which of the following cubic
lattice system?
Simple
Cubic
Body centered Cubic (BCC)
Face
Centered Cubic (FCC)
Diamond
Cubic
Face
Centered Cubic (FCC)
Atomic
packing factor for various cubic lattice system :
Simple
cubic : 0.52
Body
Centered Cubic (BCC) : 0.68
Face
Centered Cubic (FCC) : 0.74
Diamond
Cubic : 0.34
Hence, the correct option is (C).
&Key Points:-
●Atomic packing factor is fraction of volume in a crystal structure that is occupied by constituent particles.
Where, N
●It
is dimensionless quantity and always less than unity.
●Also named as
packing efficiency or packing fraction.
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