If there are 4 atoms in one unit cell then the packing efficiency of unit cell is
0.52
0.74
0.68
0.91
since Number of atom per unit cell is 4 that means it is a fcc unit cell.
In fcc unit cell relation between radius of atom and edge of unit cell is -
Packing fraction, Pf, or packing efficiency -
-
Option 1)
0.52
This is incorrect
Option 2)
0.74
This is correct
Option 3)
0.68
This is incorrect
Option 4)
0.91
This is incorrect
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