InterviewSolution
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InterviewSolution
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Which one of the transittion metal ions is coloured in aqueous solution?A. `Cu^(+)`B. `Zn^(2+)`C. `Sc^(3+)`D. `V^(4+)` |
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Answer» Correct Answer - D (a) Valence shell electron configuration of `Cu^( +)` is `[Ar]^(18) 3 d^(10)`, so `n = 10` (b) Valence shell electron configuration of `Zn^( 2+)` is `[Ar]^(18) 3 d^(10)`, so `n = 0` (c ) Valence shell electron configuration of `Sc^(3 +)` is `[Ar]^(18) 3 d^(0)`, so `n = 0` (d) Valence shell electron configuration of `V^( 4+)` is `[Ar]^(18) 3 d^(1)`, so `n = 1` As `V^(4+)` has one uparied electron and so in presence of water as ligand it will undergo d-d transition of electron Hence `V^(4 +)` ions will produce colure in the solution. |
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