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NEET Sample Paper NEET Sample Test Paper-79

  • question_answer
     Due to presence of unpaired electron, the ion becomes coloured, which one is coloured ion?

    A)  \[{{V}^{5\,+}}\]                                

    B)  \[{{\operatorname{Cu}}^{2\,+}}\]

    C)  \[{{\operatorname{Cu}}^{+}}\]                      

    D)  \[T{{i}^{\,++}}\]

    Correct Answer: B

    Solution :

    Electronic configuration of \[{{\operatorname{Cu}}^{2}}^{+}=\, \left[ Ar \right] 4{{d}^{9}}\,5{{s}^{0}}\]. Due to presence of unpaired electrons, it is coloured.


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