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RAJASTHAN ­ PET Rajasthan PET Solved Paper-2011

  • question_answer
    Oxidation number of Cr in\[Cr{{O}_{5}}\]is

    A)  +10           

    B)  +8

    C)  +6            

    D)  +4

    Correct Answer: C

    Solution :

     The structure of\[Cr{{O}_{5}}\]is as Let the oxidation number of Cr is\[x\]. \[x+1(-2)+4(-1)=0\] \[x-2-4=0\] \[x=+6\]


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