JEE Main & Advanced Chemistry The d-and f-Block Elements / d तथा f ब्लॉक के तत्व Question Bank General Characteristics

  • question_answer
    Which of the following ions is coloured [BHU 1997]

    A) \[C{{u}^{+}}\]

    B) \[C{{u}^{2+}}\]

    C) \[T{{i}^{4+}}\]

    D) \[{{V}^{5+}}\]

    Correct Answer: B

    Solution :

    \[C{{u}^{2+}}\,\to \,3{{d}^{9}}4{{s}^{0}}\] 1 unpaired \[{{e}^{-}}\].


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