Chemical Bonding And Molecular Structure

$\mathrm{O}_2^{-}, \mathrm{N}_2^{+}$

$\mathrm{O}_2{ }^{+}, \mathrm{N}_2{ }^{2-}$

$\mathrm{O}_2^{-}, \mathrm{N}_2^{-}$

$\mathrm{O}_2^{+}, \mathrm{N}_2^{-}$