JEE Main & Advanced Chemistry The d-and f-Block Elements / d तथा f ब्लॉक के तत्व Question Bank Compounds of Transitional Elements

  • question_answer
    The number of unpaired electrons in \[Z{{n}^{2+}}\] is

    A) 2

    B) 3

    C) 4

    D) 0

    Correct Answer: D

    Solution :

    \[Z{{n}_{30}}\to 3{{d}^{10}}\], \[4{{S}^{2}}\] \[Z{{n}^{+2}}\to 3{{d}^{10}}\]                                                    No unpaired electrons


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