Ionic radii $-\mathrm{Al}^{3+}<\mathrm{Mg}^{2+}<\mathrm{Na}^{+}<\mathrm{F}^{-}$
lonisation energy - $\mathrm{B}<\mathrm{C}<\mathrm{O}<\mathrm{N}$
Metallic character $-\mathrm{B}<\mathrm{Al}<\mathrm{Mg}<\mathrm{K}$
Electron negativity $-\mathrm{Si}<\mathrm{P}<\mathrm{S}<\mathrm{Cl}$
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