InterviewSolution
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InterviewSolution
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Which of the following set has all the coloured ions ?A. `Cu^(+), Cu^(2+), Ni^(2+)`B. `Cu^(2+), Ca^(2+), Sc^(2+)`C. `Cu^(2+), Fe^(2+), Co^(2+)`D. `Na^(+), Mg^(2+), Al^(3+)` |
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Answer» Correct Answer - C In set `Cu^(2+), Fe ^(2+), Co^(2+),` all th ions have unpaired d-electrons. Hence, they are all coloured ions. `Cu^(2+)to [Ar] 3d^(9)4s^(0)` `Fe ^(2+)to [Ar] 3d^(6)4s^(0)` `Co^(2+)to [Ar] 3d^(7)4s^(0).` |
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