no. of bonding electrons > no. of antibonding electrons
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B
no. of bonding electrons < no. of antibonding electrons
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C
no. of bonding electrons = no. of antibonding electrons
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D
presence of unpaired electrons in molecular orbitals.
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Solution
The correct option is B presence of unpaired electrons in molecular orbitals. Electronic configuration of O2: (σ1s2)(σ∗1s2)(σ2s2)(σ∗2s2)(σ2p2z)(π2p2x=π2p2y)(π∗2p1x=π∗2p1y),
(π∗2p1x=π∗2p1y) each has one electron or unpaired electron.