Moleculer orbital configuration of $O_{2}^{2-}$ is

$\sigma_{1 s^{2}} \sigma_{1 s^{2}}^{*} \sigma_{2 s^{2}} \sigma_{2 s^{2}}^{*} \sigma_{2 p_{z}^{2}} \pi_{2 p_{*}^{2}}$$=\pi_{2 p_{y}^{2}} \pi_{2 p_{z}^{2}}^{*}$$=\pi_{2 p_{y}^{2}}^{*}=\pi_{2 p_{y}^{2}}^{*}$