The volume of atom present in a face-centred cubic unit cell of a metal (`r` is atomic radius ) is

Options

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

Explanation

`V = n xx ((4)/(3) pi r^(3) ) = 4 xx ((4)/(3) pi r^(3)) = (16)/(3) pi r^(3)`