The correct order of configuration of O2 molecule according to MOT is
1
\(\begin{array}{l} \sigma \mathrm{s}^{2}<\sigma^{*} 1 \mathrm{~s}^{2}<\sigma 2 \mathrm{~s}^{2}<\sigma^{*} 2 \mathrm{~s}^{2}<\left(\pi 2 \mathrm{p}_{\mathrm{x}}^{2}=\pi 2 \mathrm{p}_{\mathrm{y}}^{2}\right) <\sigma 2 \mathrm{p}_{\mathrm{z}}^{2}<\left(\pi^{*} 2 \mathrm{p}_{\mathrm{x}}^{1}=\pi^{*} 2 \mathrm{p}_{\mathrm{y}}^{1}\right) \end{array}\)
2
\(\begin{array}{l} \sigma 1 s^{2}<\sigma^{*} 1 s^{2}<\sigma 2 s^{2}<\sigma * 2 s^{2}<\sigma 2 p_{z}^{2}< \left(\pi 2 p_{x}^{2}=\pi 2 \mathrm{p}_{\mathrm{y}}^{2}\right)<\left(\pi^{*} 2 \mathrm{p}_{\mathrm{x}}^{1}=\pi^{*} 2 \mathrm{p}_{\mathrm{y}}^{1}\right) \end{array}\)
3
\(\begin{array}{l} \sigma 1 s^{2}<\sigma^{*} 1 s^{2}<\sigma 2 s^{2}<\left(\pi 2 p^{2}=\pi 2 p_{y}^{2}\right) <\left(\pi^{*} 2 p_{x}^{2}=\pi^{*} 2 p_{y}^{2}\right)<\sigma^{*} 2 s^{2} \end{array}\)
4
\(\begin{array}{l} \sigma 1 s^{2}<\sigma * 1 s^{2}<\sigma 2 s^{2}<\sigma * 2 s^{2}<\left(\pi 2 p_{x}^{2}=\pi 2 p_{y}^{2}\right) <\left(\pi^{*} 2 p_{x}^{2}=\pi^{*} 2 p_{y}^{2}\right) \end{array}\)