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Coordination Complexes

Superoxide io...

Question

Superoxide ion has ________ electrons in anti-bonding molecular orbitals.

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Solution

Superoxide ion is $O_{2}^{-}$ and it has 17 electrons
$(σ 1 s)^{2}, (σ^{} 1 s)^{2}, (σ 2 s)^{2}, (σ^{} 2 s)^{2}, (2 p_{z})^{2}, (π)^{4}, (π^{*})^{3}$
then it has 7 electrons in anti-bonding molecular orbitals

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