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Out of [Sc(H(2)O)(6)]^(3+) and [Ti(H(2)I...

Out of `[Sc(H_(2)O)_(6)]^(3+)` and `[Ti(H_(2)I)_(6)]^(3+)` ions which one is coloured and why ?

Text Solution

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`[Sc(H_(2)O)]^(3+)` has no electron in d-orbital whereas `[Ti(H_(2)O)]^(3+)` has one electron in outermost 3d orbital. Hence `Ti^(3+)` can undergo d-d transition whereas in `Sc^(3+)` such transition cannot occur. Thus only `[Ti(H_(2)O)_(6)]^(3+)` is coloured in nature.
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