How many atoms per unit cell (Z) are present in bcc unit cell?

CBSE Class 12 CBSE Class 12 Chemistry
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1

In bcc unit cell, total number of atoms
= the number of atoms contributed from the corners of the unit cell + the number of atoms contributed from the body of unit cell
= 8 corners X 1/8 atom per corner + 1 body centre atom X 1
=1/8x8 +1X1
= 2 atoms