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CEE Kerala Engineering CEE Kerala Engineering Solved Paper-2000

  • question_answer
    The oxidation states of iodine in\[HI{{O}_{4}},{{H}_{3}}I{{O}_{5}}\]and\[{{H}_{5}}I{{O}_{6}}\]are respectively:

    A)  \[+1,+3,+7\]     

    B)         \[+7,+7,+3\]

    C)  \[+7,+7,+7\]     

    D)         \[+7,+5,+3\]

    E)  none of these

    Correct Answer: C

    Solution :

    Oxidation state of\[I\]in\[HI{{O}_{4}}\]is +7 as: \[1+x+4(-2)=0\]                 \[x=+7\] Oxidation state of\[I\]in\[{{H}_{3}}I{{O}_{5}}\]is +7 as. \[3+x+5(-2)=0\] \[x=+7\] Oxidation state of\[I\]in\[{{H}_{2}}I{{O}_{6}}\]is +7 as                 \[5+x+6\,(-2)=0\] \[x=+7\]


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