Question

If R is the radius of the octahedral voids and ‘r’ is the radius of the atom in close packing, then r/R is equal

• A. 2.41
• B. 4.76
• C. 3.22
• D. 9.1

Answer 1

The correct option is A 2.41

For OV,
$\frac{R}{r}(i.e.,\frac{r_{\oplus }}{r_{\ominus }}\frac{r_{void}}{r_{\ominus }})=0.414$
$\therefore \frac{r}{R}=\frac{1}{0.414}=2.41$