The edge lengths of the unit cells in terms of the radius of sphere co

1.	The edge lengths of the unit cells in terms of the radius of sphere constituting fcc, bcc and simple cubic unit cells are respectively ....... (a)2√2r,4r√3,2r (b) 4r√3,2√2r,2r (c)2r,2√2r,4r√3 (d) 2r,4r√3,2√2r
Answer» The edge lengths of the unit cells in terms of the radius of sphere constituting fcc, bcc and simple cubic unit cells are respectively ....... (a) $2 \sqrt{2 r}, \frac{4 r}{\sqrt{3}}, 2 r$ (b) $\frac{4 r}{\sqrt{3}}, 2 \sqrt{2 r}, 2 r$ (c) $2 r, 2 \sqrt{2 r}, \frac{4 r}{\sqrt{3}}$ (d) $2 r, \frac{4 r}{\sqrt{3}}, 2 \sqrt{2 r}$

The edge lengths of the unit cells in terms of the radius of sphere constituting fcc, bcc and simple cubic unit cells are respectively ....... (a)2√2r,4r√3,2r (b) 4r√3,2√2r,2r (c)2r,2√2r,4r√3 (d) 2r,4r√3,2√2r

Answer»

The edge lengths of the unit cells in terms of the radius of sphere constituting fcc, bcc and simple cubic unit cells are respectively .......

(a) $2 \sqrt{2 r}, \frac{4 r}{\sqrt{3}}, 2 r$ (b) $\frac{4 r}{\sqrt{3}}, 2 \sqrt{2 r}, 2 r$