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  4. In a cubic unit cell of bcc structure, the lattic points (i.e., number of atoms) are:

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Q. In a cubic unit cell of bcc structure, the lattic points (i.e., number of atoms) are:

KEAMKEAM 2006

Solution:

Number of lattice points in a crystal structure will be
$ n=\frac{{{N}_{C}}}{8}+\frac{{{N}_{F}}}{2}+\frac{{{N}_{1}}}{1} $
In bcc crystal, $ {{N}_{C}}=8,{{N}_{F}}=0 $
and $ {{N}_{i}}=1 $
$ n=\frac{8}{8}+\frac{0}{1}+\frac{1}{1}=2 $