Question

In which of the following compounds does the ratio of anion to cation size have the lowest value?

• A. NaCl
• B. KCl
• C. $MgC{l}_2$
• D. NaBr

Answer 1

Answer: (B)

As the ionic radii decrease in order $K^{+}>N{a}^{+}>M{g}^{2+}$ and $B{r}^{-}>C{l}^{-}$ , therefore, $C{l}^{-}/K^{+}$ has the least values.