NEET Sample Paper NEET Sample Test Paper-7

  • question_answer
    Which one of the following constitutes a group of the isoelectronic species?

    A)  \[C_{2}^{2-},O_{2}^{-},CO,NO\]  

    B)  \[N{{O}^{-}},C_{2}^{2-},C{{N}^{-}},{{N}_{2}}\]

    C)  \[C{{N}^{-}},{{N}_{2}},O_{2}^{2},CO_{2}^{2-}\]

    D)  \[{{N}_{2}},O_{2}^{-},N{{O}^{+}},CO\]

    Correct Answer: C

    Solution :

    Isoelectronic species have same number of electrons. \[N{{O}^{+}},C_{2}^{2-},C{{N}^{-}}\] and \[{{N}_{2}}\] all have 14 electrons hence these are isoelectronic species.


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