RAJASTHAN ­ PET Rajasthan PET Solved Paper-2009

  • question_answer
    The oxidation number of sulphur is -1 in

    A)  \[{{H}_{2}}S\]              

    B)  \[Fe{{S}_{2}}\]

    C)  \[C{{S}_{2}}\]               

    D)  \[C{{u}_{2}}S\]

    Correct Answer: B

    Solution :

     Let the oxidation number of S in\[F{{e}_{2}}\]is\[x\]. \[2+2-x=0\] \[2x=-2\] \[x=-1\]


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