In which of the following arrangements the order is NOT according...

Options

1. A$$\mathrm{Al}^{3+} < \mathrm{Mg}^{2+} < \mathrm{Na}^{+} < \mathrm{F}^{-}$$ Increasing ionic size
2. B$$\mathrm{B} < \mathrm{C} < \mathrm{N} < \mathrm{O}$$ Increasing first ionization enthalpy
3. C$$\mathrm{l} < \mathrm{Br} < \mathrm{F} < \mathrm{Cl}$$ Increasing electron gain enthalpy (with negative sign)
4. D$\mathrm{Li} < \mathrm{Na} < \mathrm{K} < \mathrm{Rb}$ Increasing metallic radius