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Explain why Gd^(3+) is colourless? |
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Answer» Solution :(1) `Gd^(3+)` has electronic configuration, `[Xe]4f^(7)` (2) Due to extra STABILITY of half FILLED ORBITAL, it does not ALLOW `f rarr f` TRANSITION, and hence does not absorb radiations in the visible region. Hence `Gd^(3+)` is colourless. |
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