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JEE Main & Advanced Chemistry The d-and f-Block Elements / d तथा f ब्लॉक के तत्व Question Bank Mock Test - d- and f- Block Elements

  • question_answer
    For the four successive transition elements (Cr, Mn, Fe and Co), the stability of+2 oxidation state will be there in which of the following order?

    A) Fe > Mn > Co > Cr

    B) Cr > Mn > Co > Fe

    C) Mn > Cr > Fe > Co

    D) Co > Mn > Fe > Cr

    Correct Answer: C

    Solution :

    [c] \[M{{n}^{2+}}({{d}^{5}})>C{{r}^{2+}}({{d}^{4}})>F{{e}^{2+}}({{d}^{6}})>C{{o}^{2+}}({{d}^{7}})\]


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