BCECE Engineering BCECE Engineering Solved Paper-2006

  • question_answer
    The stability of ferric ion is due to:

    A)  half filled \[f-\]orbitals      

    B)  half filled \[d-\]orbitals

    C)  completely filled \[f-\]orbitals

    D)  completely filled \[d-\]orbitals

    Correct Answer: B

    Solution :

    \[\text{F}{{\text{e}}^{\text{3+}}}\]ion has the following configuration \[F{{e}^{3+}}=1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{5}}\] Hence, ferric ion is quite stable due to half-filled \[d-\]orbitals.                                     


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