Total volume of atoms present in a face centred cubic unit cell of a metal is ( r is atomic radius):

(A) 20/3 $\pi$r3

(B)  24/3 $\pi$r3

(C)  12/3 $\pi$r3

(D)  16/3 $\pi$r3

Concept Videos :-

#5 | Simple Cubic Unit Cell: Coordination Number
#10 | FCC Unit Cell: Coordination Number
#15 | Tetrahedral Voids
#16 | Octahedral Voids
#17 | Position of Tetrahedral Voids in FCC
#18 | Position of Octahedral Voids in FCC
#19 | Hexagonal Primitive (HP) Unit Cell
#22 | Coordination Number of HP Unit Cel