InterviewSolution
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InterviewSolution
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The ions from among the following which are colourless are:A. (i) and (ii) onlyB. (i),(ii) and (iii)C. (iii) and (iv)D. (ii) and (iii) |
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Answer» Correct Answer - A (i) Valence shell electron configuration of `Ti^(4+)` is `3d^(0) 4 s^(0)`. As there is no unparied electrons for d-d trastition, the solution of ions will be colourless (ii) Valence shell electron configuration of `Cu^(+)` is `3 d^(10) 4 s^(0)`. As all electons are unparied, there is no d-d trasition, so the solution of ions will be colourless. (iii) Valence shell electron configuration of `Co^(3 +)` is `3 d^(6) 4s^(0)`. As there are 4 upaired electrons, there is d-d transition of electron, so the solution of ions will be coloured. (iv) Valenec shell electron configuration of `Fe^(2 +)` is `3 d^(6) 4 s^(0)`. As there are 4 upaired electrons. there is d-d transition of electron, so the solution of ions will be coloured. |
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