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Total number of electrons present in (π∗)\left(\pi^*\right)(π∗) molecular orbitals of O2,O2+\mathrm{O}_2, \mathrm{O}_2^{+}O2,O2+ and O2−\mathrm{O}_2^{-}O2− is ________.
O2(16 e):(σ1 s)2(σ1 s∗)2(σ2 s)2(σ2 s∗)2 (σ2 p)2[(π2 p)2=(π2 p)2],[(π2 p∗)1=(π2 p∗)1] \begin{aligned} & \mathrm{O}_2(16 \mathrm{e}):\left(\sigma_{1 \mathrm{~s}}\right)^2\left(\sigma_{1 \mathrm{~s}}^*\right)^2\left(\sigma_{2 \mathrm{~s}}\right)^2\left(\sigma_{2 \mathrm{~s}}^*\right)^2 \\ & \left(\sigma_{2 \mathrm{p}}\right)^2\left[\left(\pi_{2 \mathrm{p}}\right)^2=\left(\pi_{2 \mathrm{p}}\right)^2\right],\left[\left(\pi_{2 \mathrm{p}}^*\right)^1=\left(\pi_{2 \mathrm{p}}^*\right)^1\right] \end{aligned} O2(16 e):(σ1 s)2(σ1 s∗)2(σ2 s)2(σ2 s∗)2 (σ2 p)2[(π2 p)2=(π2 p)2],[(π2 p∗)1=(π2 p∗)1]
Number of e−\mathrm{e}^{-}e− present in (π∗)\left(\pi^*\right)(π∗) of O2=2\mathrm{O}_2=2O2=2
Number of e−\mathrm{e}^{-}e− present in (π∗)\left(\pi^*\right)(π∗) of O2+=1\mathrm{O}_2^{+}=1O2+=1
Number of e−\mathrm{e}^{-}e− present in (π∗)\left(\pi^*\right)(π∗) of O2−=3\mathrm{O}_2^{-}=3O2−=3
So total e−\mathrm{e}^{-}e− in (π∗)=2+1+3=6\left(\pi^*\right)=2+1+3=6(π∗)=2+1+3=6
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