Refer to Diagram 9-1.According to molecular orbital theory,which of the following species will be paramagnetic? A) Li₂ B) C₂ C) C₂- D) F₂ E) O₂2+

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According to molecular orbital theory, if a species has unpaired electrons in its molecular orbitals, it will be paramagnetic. In species A, B, D, and E, all electrons are paired, so they will be diamagnetic. In species C, there is an extra electron placed in the antibonding π* orbital, which is not paired, making it paramagnetic.