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

Options

A. `( 24)/( 3) pi r^(3)`
B. `( 12)/( 3) pi r^(3)`
C. `(16)/( 3) pi r^(3)`
D. `(20)/( 3) pir^(3)`

Answer

C

Explanation

No of atoms present in fcc unit cell = 4
Total volume of atoms present in fcc unit cell
` = 4 xx ( 4)/( 3) pi r^(3) = ( 16)/( 3) pi r^(3)`