Chemistry - PERIODIC TABLE Question with Solution | TestHub

Total no. of radius larger then ${\mathrm{Li}}^{+}$between ${\mathrm{Mg}}^{2+},{\mathrm{Al}}^{3+},{\mathrm{Na}}^{+},{\mathrm{Be}}^{2+},{\mathrm{K}}^{+},{\mathrm{F}}^{-},{\mathrm{Cl}}^{-}$.

So we all know on going top to bottom in periodic table radius increases. So ${\mathrm{Na}}^{+}\&{\mathrm{K}}^{+}$has large radius then ${\mathrm{Li}}^{+}$. K⁺ is smaller than Cl^(-) since they are isoelectronic. So total 4 ions has large radii. ${\mathrm{Na}}^{+},{\mathrm{K}}^{+},{\mathrm{F}}^{-},{\mathrm{Cl}}^{-}$