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NEET Sample Paper NEET Sample Test Paper-82

  • question_answer
    Effective atomic number abbreviated as, EAN, which is defined as the resultant number of electrons with the metal atom or ion after gaining electrons from the donor atoms of the ligand. EAN of \[{{\left[ Ni\,{{\left( CN \right)}_{4}} \right]}^{\,2\,-}}\] is

    A)  32                               

    B)  33

    C)  34                               

    D)  36

    Correct Answer: C

    Solution :

    EAN of Ni in \[{{\left[ Ni\,\,{{(CN)}_{4}} \right]}^{2\,-}}\] is = (atomic number - oxidation state) + 2x coordination number \[= \,28 - 2 + 4 \times  2\] \[= \,26 + 8 = 34\]


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