Question

The number of atoms per unit cell in a sc, bcc and fcc system are
(a) 1, 2 and 4 respectively
(b) 8, 6 and 10 respectively
(c) 1, 4 and 2 respectively
(d) 2, 4 and 1 respectively

Answer 1

Answer:

1,2,4 atoms respectively

Answer 2

Answer:

(a) 1 , 2 and 4 respectively

Explanation:

sc..

1/8 ×8= 1

simple cubic contains atom in its corners only ....a cube has 8 corners and each atom is shared between 8 atoms

bcc..

1/8×8 + 1

bcc contains atoms in its corners and in its body centre

fcc..

fcc has atoms in its corners and at face centres

1/8×8+1/2×6