JEE Main & Advanced Chemistry Redox Reactions / रेडॉक्स अभिक्रियाएँ Question Bank Oxidation number and Oxidation state

  • question_answer
    Oxidation number of cobalt in \[K[Co{{(CO)}_{4}}]\] is [KCET 1996]

    A) + 1         

    B) + 3

    C) -1         

    D) -3

    Correct Answer: C

    Solution :

    \[K[\overset{*}{\mathop{C}}\,o{{(CO)}_{4}}]\]                                 \[1+x+0=0;\,\,x=-1\].


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