Question
An element occurs in the bcc structure. How many atoms are present in its unit cell explain ?
Solution
body centre wholly belongs to the unit cell in which it is present. Thus in a body-centered cubic (bcc) unit cell:
(i) 8 corners × 1/8 per corner atom = 1 atom
(ii) 1 body centre atom = 1 × 1 = 1 atom
∴ Total number of atoms per unit cell = 2 atoms.
(i) 8 corners × 1/8 per corner atom = 1 atom
(ii) 1 body centre atom = 1 × 1 = 1 atom
∴ Total number of atoms per unit cell = 2 atoms.
