Chemistry - Solid State Question with Solution | TestHub

For$\text{NaCl}$like structure. The radius ratio should be$0.414$to$0.732$

$\frac{{\mathrm{r}}^{+}}{{\mathrm{r}}^{-}}=\frac{100}{{\mathrm{r}}_{\mathrm{m}\mathrm{a}\mathrm{x}}^{-}}=0.414$

$\frac{100}{{\mathrm{r}}_{\mathrm{m}\mathrm{i}\mathrm{n}}^{-}}=0.732$

$\therefore {\mathrm{r}}_{\mathrm{m}\mathrm{a}\mathrm{x}}^{-}=241.6\mathrm{ }\mathrm{p}\mathrm{m}$

$\therefore {\text{r}}_{\text{min}}=136.6\text{pm}$