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DUMET Medical DUMET Medical Solved Paper-2009

  • question_answer
    The common features among the species\[C{{N}^{-}}\], CO and \[N{{O}^{+}}\] are

    A)  bond order three and iso-electronic

    B)  bond order three and weak-field ligands

    C)  bond order two and \[\pi \]-acceptor

    D)  iso-electronic and weak-field ligands

    Correct Answer: A

    Solution :

    Species Structure Bond order No. of electrons
    \[C{{N}^{-}}\] \[C\equiv N\] 3 6 + 7 + 1 = 14
    CO \[C\overset{\leftarrow }{\mathop{=}}\,O\] 3 6 + 8 = 14
    \[N{{O}^{+}}\] \[N\equiv {{O}^{+}}\] 3 7 + 8 - 1 = 14


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