The edge lengths of the unit cells in terms of the radius of spheres constituting fcc,bcc and simple cubic unit cell are respectively________.
1
2√2r, \(\rm \frac{4r}{\sqrt3}\), 2r
2
\(\rm \frac{4r}{√3}\), 2√2r, 2r
3
2r, 2√2r, \(\rm \frac{4r}{\sqrt3}\)
4
2r, \(\rm \frac{4r}{√3}\), 2√2r