1.10 Calculate the efficiency of packing in case of a metal crystal for
(i) simple cubic
(i) Simple cubic :- In a simple cubic lattice the atoms are located only on the corners of the cube.
Thus, the side of the cube ‘a’, and the radius of each particle, r are related as:
a = 2r
Volume of cubic unit cell = =
And Volume of 1 atom :
Thus packing efficiency of simple cubic is