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NEET Sample Paper NEET Sample Test Paper-93

  • question_answer
    The number of antibonding electron pairs in \[O_{2}^{2-}\] molecular ion on the basis of molecular orbital theory are (at. no. O=8)

    A) 2                     

    B)        3     

    C) 4         

    D)        5

    Correct Answer: C

    Solution :

    [c] \[O_{2}^{2-}=18{{e}^{-}}\] \[\sigma 1{{s}^{2}},\]\[{{\sigma }^{*}}1{{s}^{2}},\]\[\sigma 2{{s}^{2}},\]\[{{\sigma }^{*}}2{{s}^{2}},\]\[\sigma 2p_{z}^{2},\] \[\pi 2p_{x}^{2}=\pi 2p_{y}^{2},{{\pi }^{*}}2p_{x}^{2}={{\pi }^{*}}2p_{y}^{2}\]


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