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NEET Sample Paper NEET Sample Test Paper-75

  • question_answer
    Number of unpaired electrons of Ni in \[{{\left[ Ni{{(CN)}_{4}} \right]}^{2-}}\] is

    A)  0                                

    B)  1

    C)  3                                

    D)  4

    Correct Answer: A

    Solution :

    In\[{{\left[ Ni{{\left( CN \right)}_{4}} \right]}^{2-}}\], the oxidation state of Ni is +2. \[N{{i}^{2+}}=\left[ Ar \right]3{{d}^{8}}4{{s}^{0}}\] Since, CN is a strong ligand hence it will form low spin complex due to pairing of electrons.


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