The electronic configuration of four elements is given below.  Arrange these elements in the correct order of the magnitude (without sign) of their electron affinity.

$1) 2{\mathrm{s}}^{2}2{\mathrm{p}}^5$

$\mathrm{II})3{\mathrm{s}}^{2}3{\mathrm{p}}^5$

$\mathrm{III})2{\mathrm{s}}^{2}2{\mathrm{p}}^4$

$\mathrm{Iv})3{\mathrm{s}}^{2}3{\mathrm{p}}^4$

Select the correct answer using the codes given below