NEET Chemistry NEET PYQ-The d-and f-Block Elements

  • question_answer
    Which of the following shows maximum number of oxidation states?                        [AIPMT 2002]

    A) Cr

    B) Fe

    C) Mn

    D) V

    Correct Answer: C

    Solution :

    [c] Each of the element in group IIIB to VIIB can show the maximum oxidation state equal to its group number. Mn shows maximum number of oxidation states on the basis of following electronic configuration \[_{25}Mn=1{{s}^{2}},2{{s}^{2}}2{{p}^{6}}\,,3{{s}^{2}}3{{p}^{6}}\,3{{d}^{5}}\,,4{{s}^{2}}\,(+7)\]


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