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

  • question_answer
    Which one of the elements with the following outer orbital configurations may exhibit the largest number of oxidation states? [AIPMT (S) 2009]

    A) 3d3, 4s2

    B) 3d5, 4s1

    C) 3d5, 4s2

    D) 3d2, 4s2

    Correct Answer: C

    Solution :

    [c] Key Idea Number of oxidation states exhibited by d-block elements is the sum of number of electrons (unpaired) in d-orbitals and number of electrons in s-orbital.
    \[15\,\Omega \]
    \[240\,\Omega \]
    \[15\,\Omega \]
    \[{{T}_{1}}\]
    Hence, element with \[{{T}_{2}}({{T}_{1}}>{{T}_{2}}).\] configuration exhibits largest number of oxidation states.


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