Periodic Table And Periodicity

$\mathrm{N}>\mathrm{O}>\mathrm{P}>\mathrm{S}$ - First ionisation enthalpy

$\mathrm{F}>\mathrm{Cl}>\mathrm{O}>\mathrm{S}$ - Negative electron gain enthalpy

$\mathrm{Fe}^{3+}<\mathrm{Fe}^{2+}<\mathrm{Fe}$ - Size

$\mathrm{O}>\mathrm{N}>\mathrm{S}>\mathrm{P}$ - Non-metallic character