Chemistry - CHEMICAL BONDING Question with Solution | TestHub

The size of cation is in order of${\mathrm{Li}}^{+}<{\mathrm{Na}}^{+}<{\mathrm{Cs}}^{+}$ and the size of anions in the order of${\mathrm{I}}^{-}>{\mathrm{F}}^{-}$ Thus, when the cation is largest and anion is smallest, the ratio of their sizes is maximum. Hence, cation to anion sizeratio is maximum for CsF.