Chemistry - GENERAL CHEMISTRY Question with Solution | TestHub

${\mathrm{F}}^{\ominus }\to 10{\mathrm{e}}^{-}$

${\mathrm{S}}^{2-}\to 18{\mathrm{e}}^{-}$

${\mathrm{N}}^{3-}\to 10{\mathrm{e}}^{-}$

For isoelectronic species, total number of electron must be same.