InterviewSolution
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InterviewSolution
| 1. |
Which of the following cations are coloured in aqueous solution and why ? Sc^(3+), V^(3+), Te^(4+), Mn^(2+) ( At.Nos. Sc= 21, V = 23, Ti= 22, Mn =25) |
| Answer» Solution :`SC^(3+)= 3d^(0)4s^(0)`( No unpaired ELECTRON), `V^(3+)= 3d^(2) 4s^(0) `( 2 unpaired electrons).Thus, only `V^(3+)` and `Mn^(2+)` are colouredbecause they have unpaired electrons. | |