A trivalent lanthanide ion having electronic configuration as 4f³ has similar colour in aqueous solution as another trivalent lanthanide ion having electronic configuration of
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question : A trivalent lanthanide ion having electronic configuration as 4f³ has similar colour in aqueous solution as another trivalent lanthanide ion having electronic configuration of ...
answer : 4f¹¹
explanation : we know, in case of lanthanide, the colour of a positive ion depends on the number of unpaired f electrons.
and also cation of xf electrons has the same colour as that of (14 - x) electrons.
after above explanation, you can easily say that the another trivalent lanthanide ion having configuration of 4f¹¹ has similar colour of the trivalent ionn having electronic configuration of 4f³
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