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BHU PMT BHU PMT (Mains) Solved Paper-2008

  • question_answer
    Which one of the following elements does not form the compound,\[{{M}_{4}}{{O}_{10}}\](M = element)?

    A)  P                                           

    B)  Sb

    C)  Bi                                          

    D)  As

    Correct Answer: C

    Solution :

                     The stability of higher oxidation states decreases down the group due to inert pair effect. Hence, bismuth pentoxide which is obtained by the action of strong oxidizing agents on\[B{{i}_{2}}{{O}_{3}},\]is extremely unstable and loses oxygen to form trioxide. Therefore,\[Bi\] does not form\[B{{i}_{4}}{{O}_{10}}.\].


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