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generally transition elements form coloured compounds but Sc+3 forms colurless compounds why??

generally transition elements form coloured compounds  but Sc+3 forms colurless compounds why??

Grade:10

1 Answers

karan singh panwar
19 Points
8 years ago
compounds of transition elements which are coloured have unpaired electrons in their d orbitals. These electrons absorb energy from visible spectrum and show complimentary colour. But Sc3+ does not have any electron in its d orbital and hence form colourless compounds.

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