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NEET AIPMT SOLVED PAPER 1998

  • question_answer
                    Which one of the following elements shows maximum number of different oxidation states in its compounds?                                                                                                                                               

    A)                 Eu    

    B)                 La

    C)                 Gd                                         

    D)                 Am

    Correct Answer: D

    Solution :

                    Oxidation state shown by elements are as?                 La = + 3                 Europium (Eu) and gadolium (Gd) = + 2 and +3 Americum (Am) = + 2, +3, + 4, + 5 and + 6                 Am shows maximum number of different oxidation state due to its larger size and low ionization energy


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