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

  • question_answer
    IUPAC name of \[[Co{{(N{{H}_{3}})}_{5}}N{{O}_{2}}]C{{l}_{2}}\] [Pb. CET 2000]

    A) Pentamminenitrocobalt (III) chloride

    B) Pentamminenitrosocobalt (III) chloride

    C) Pentamminenitrocobalt (II) chloride

    D) None of these

    Correct Answer: A

    Solution :

    In the compounds \[[Co{{(N{{H}_{3}})}_{5}}N{{O}_{2}}]C{{l}_{2}}\], the oxidation state of cobalt is +3 and here 5 \[N{{H}_{3}}\] ligand, a \[N{{O}_{2}}\] ligand are attached to the central atom. therefore its name is pentaamminecobalt (III) chloride.


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