In which of the following arrangements the order is NOT according to the property indicated against it?

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