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JEE Main & Advanced Chemistry Coordination Chemistry Question Bank Nomenclature, Oxidation state and EAN number

  • question_answer
    The effective atomic number of cobalt in the complex \[{{[Co{{(N{{H}_{3}})}_{6}}]}^{3+}}\] is   [MP PET 2003]

    A) 36

    B) 33

    C) 24

    D) 30

    Correct Answer: A

    Solution :

      EAN = at. no. of central atom - oxidation state \[+\,\,2\times \](no. of ligands) \[=27-3+2\times 6=36.\]


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