RAJASTHAN PMT Rajasthan - PMT Solved Paper-1998

  • question_answer
    Which ion does not have colour?

    A)  \[Cu\,(I)\]                         

    B)                         \[Cr\,(III)\]

    C)                         \[Co(II)\]                           

    D)                         \[Cu(II)\]

    Correct Answer: A

    Solution :

    Ion which has unpaired electron would be coloured.   This   is   the   reason \[C{{u}^{+}}=3{{d}^{10}}\]= colourless


You need to login to perform this action.
You will be redirected in 3 sec spinner