Diagram 9-1 the Molecular Orbital Diagram Below May Be Used $\sigma$

question 9

Multiple Choice

Diagram 9-1 The molecular orbital diagram below may be used for the following problem(s) .For oxygen and fluorine,the $\sigma$ _2p orbital should be lower in energy than the $\pi$ _2p orbitals.However,the diagram will still yield correct bond order and magnetic behavior for these molecules.
-Refer to Diagram 9-1.According to molecular orbital theory,which of the following species will have only $\underline{\text{ one }}$ unpaired electron?

• A) B₂
• B) O₂^2-
• C) C₂
• D) O₂
• E) N₂⁺

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