Given below are two statements : Statement ((I)): The radii of...

Given below are two statements : Statement ((\mathbf{I})): The radii of isoelectronic species increases in the order. (\mathrm{Mg}^{2+} \lt \mathrm{Na}^{+} \lt \mathrm{F}^{-} \lt \mathrm{O}^{2-}) Statement (II): The magnitude of electron gain enthalpy of halogen decreases in the order. (\mathrm{Cl}\gt\mathrm{F}\gt\mathrm{Br}\gt$\mathrm{I}$) In the light of the above statements, choose the most appropriate answer from the options given below :