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JEE Main & Advanced Chemistry Structure of Atom / परमाणु संरचना Question Bank Atomic number, Mass number Atomic species

  • question_answer
    The number of unpaired electrons in the \[F{{e}^{2+}}\] ion is   [MP PET 1989; KCET 2000]

    A)                 0             

    B)                 4

    C)                 6             

    D)                 3

    Correct Answer: B

    Solution :

                    Four unpaired electron are present in the \[F{{e}^{2+}}\] ion \[Fe_{26}^{2+}=[Ar]\,3{{d}^{6}},4{{s}^{0}}\]


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