9th Class Science Structure of the Atom Question Bank Atomic Structure Conceptive Objective Problems

  • question_answer
    Which pair is isoelectronic?

    A)  Ar and \[Cl\]    

    B)                                                                                    \[\text{N}{{\text{a}}^{+}}\]  and Ne

    C)                                                                                    \[\text{N}{{\text{a}}^{+}}\] and Mg                

    D)  Mg and Ne

    Correct Answer: B

    Solution :

                                                                                                      \[N{{a}^{+}}\]  and Ne both have 10 electrons.


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