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JEE Main & Advanced AIEEE Solved Paper-2003

  • question_answer
    In the coordination compound, \[{{K}_{4}}[Ni{{(CN)}_{4}}]\], the oxidation state of nickel is     AIEEE  Solved  Paper-2003

    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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