DUMET Medical DUMET Medical Solved Paper-2006

  • question_answer
    Which one of the following is paramagnetic?

    A)  \[N{{O}^{+}}\]         

    B)  \[C{{N}^{-}}\]

    C)  \[N{{O}^{-}}\]          

    D)  \[CO\]

    Correct Answer: C

    Solution :

    \[N{{O}^{-}}=16{{e}^{-}}=\sigma 1{{s}^{2}},\sigma *1{{s}^{2}},\sigma 2{{s}^{2}},\sigma *2{{s}^{2}}\], \[\sigma 2s_{x}^{2},\pi 2p_{y}^{2},\pi 2p_{z}^{2},\pi *2p_{y}^{1},\pi *2p_{z}^{1}\] It has two unpaired electrons so, it is paramagnetic.


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