DUMET Medical DUMET Medical Solved Paper-2009

  • question_answer
    In the change of ]^0+ to NO, the electron is added to the

    A)  \[\sigma \] orbital         

    B)  \[\pi \] orbital

    C)  \[{{\sigma }^{*}}\] orbital        

    D)  \[{{\pi }^{*}}\] orbital

    Correct Answer: D

    Solution :

    MO electronic configuration of \[N{{O}^{+}}={{(\sigma 1s)}^{2}}{{(\overset{*}{\mathop{\sigma }}\,1s)}^{2}}{{(\sigma 2s)}^{2}}{{(\overset{*}{\mathop{\sigma }}\,2s)}^{2}}{{(\pi 2{{p}_{x}})}^{2}}\] \[{{(\pi 2{{p}_{y}})}^{2}}{{(\sigma 2{{p}_{z}})}^{2}}\] \[NO={{(\sigma 1s)}^{2}}{{({{\sigma }^{*}}1s)}^{2}}{{(\sigma 2s)}^{2}}{{({{\sigma }^{*}}2s)}^{2}}{{(\sigma 2{{p}_{z}})}^{2}}\] \[{{(\pi 2{{p}_{x}})}^{2}}{{(\pi 2{{p}_{y}})}^{2}}{{({{\pi }^{*}}2{{p}_{y}})}^{1}}\] Hence, electron is added to n* orbital.


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