Periodic Table And Periodicity

\(\mathrm{Mg}^{2+}<\mathrm{Na}^{+}<\mathrm{F}^{-}<\mathrm{O}^{2-} \text { [Increasing Ionic Size] }\)

\(\mathrm{I}<\mathrm{Br}<\mathrm{F}<\mathrm{Cl} \text { [Increasing Elecrtron Gain Enthalpy with negative sign] }\)

\(\mathrm{Na}<\mathrm{K}<\mathrm{Rb}<\mathrm{Cs} \text { [Increasing Metallic Radii] }\)

\(\mathrm{B}<\mathrm{C}<\mathrm{N}<\mathrm{O} \text { [Increasing First Ionisation Enthalpy] }\)