According to molecular orbital theory,how many unpaired electrons are in a peroxide ion,O₂^2-? A)0 B)1/2 C)1 D)2 E)3

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The peroxide ion (O2^2-) has a total of 16 electrons. According to molecular orbital theory, these electrons will fill the molecular orbitals from the lowest energy level to the highest. The filling order is σ(2s), σ*(2s), σ(2p), π(2p), π*(2p), σ*(2p). In the case of O2^2-, all the molecular orbitals up to π*(2p) are fully filled, and there are no electrons in the σ*(2p) orbital, resulting in no unpaired electrons.

According to Molecular Orbital Theory,how Many Unpaired Electrons Are in a Peroxide