(Unitcell)                                                                            (no of atoms per unitcell) 
 

	Column - 1	Column - 2
A)	Simple cube	1) 4
B)	fcc	2)2
C)	bcc	3)1

	A	B	C
1)	2	3	1
2)	2	1	3
3)	3	1	2
4)	1	2	3

The correct match is
 

(A) simple cubic unit cell has atoms only at its corner. Each atom at a corner is shared between eight adjacent unit cells.
No. of atoms per unit cell in simple cubic structure =$8\times \frac{1}{8}=1$ 

(B) In case of fcc, atoms are present at corners and face centers.

      No. of atoms per unit cell=$6\times \frac{1}{2}+8\times \frac{1}{8}=4$

(C) In case of bcc, atoms are present at body center and corners.

      No. of atoms per unit cell= $1\times 1+8\times \frac{1}{8}=4$

Note: 

Atom at the body centers wholly belongs to the unit cell

Each atom at a corner is shared between eight adjacent unit cells.

Each atom at a face center is shared between two adjacent unit cells.