JEE Main & Advanced Chemistry The d-and f-Block Elements / d तथा f ब्लॉक के तत्व Question Bank Compounds of Transitional Elements

  • question_answer
    The Nesseler's reagent contains [CPMT 1976, 88; NCERT 1987; MP PMT 1985; BHU 1996]

    A) \[Hg_{2}^{++}\]

    B) \[H{{g}^{++}}\]

    C) \[Hg{{I}_{2}}^{--}\]

    D) \[Hg{{I}_{4}}^{--}\]

    Correct Answer: D

    Solution :

    \[Hg{{I}_{2}}+2KI\,\to \,{{K}_{2}}[Hg{{I}_{4}}]\]⇌\[2{{K}^{+}}+{{[Hg{{I}_{4}}]}^{-\,-}}\]


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