7. Solutions of transition metal ions are coloured because A The ions have variable oxidation states B The energy difference between 3d and 4s orbitals is very close C The ions form complexes with different ligands D The ions have unpaired d-electrons which absorbs and emit light within the visible region of the electromagnetic spectrum

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Chapter1: Chemical Foundations
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7.
Solutions of transition metal ions are coloured
because
A The ions have variable oxidation states
B The energy difference between 3d and 4s orbitals
is very close
C The ions form complexes with different ligands
D The ions have unpaired d-electrons which
absorbs and emit light within the visible region
of the electromagnetic spectrum
Transcribed Image Text:7. Solutions of transition metal ions are coloured because A The ions have variable oxidation states B The energy difference between 3d and 4s orbitals is very close C The ions form complexes with different ligands D The ions have unpaired d-electrons which absorbs and emit light within the visible region of the electromagnetic spectrum
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