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RAJASTHAN PMT Rajasthan - PMT Solved Paper-2008

  • question_answer
    In the coordination compound,\[{{K}_{4}}[Ni{{(CN)}_{4}}]\], the oxidation state of nickel is

    A) \[-1\]                                    

    B)        \[0\]

    C)        \[+1\]                                   

    D)        \[+2\]

    Correct Answer: B

    Solution :

    \[{{K}_{4}}[Ni{{(CN)}_{4}}]\xrightarrow{{}}4{{K}^{+}}+{{[Ni{{(CN)}_{4}}]}^{4-}}\]                 \[x+(4\times -1)=-4\]                         \[=x-4=-4\]                                    \[x=0\]


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