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What are the factors responsible for colour of transition metal ions? |
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Answer» Factors responsible for colour of transition metal ions are as follows: i. The presence of incompletely filled d-orbitals in metal ions. ii. The presence of unpaired electrons in d-orbitals. iii. d-d transitions of electrons due to absorption of radiation in the visible region. iv. Nature of groups (anions or ligands) linked to the metal ion in the compound or a complex. v. Type of hybridisation in metal ion in the complex. vi. Geometry of the complex containing transition metal ion. Note: Colour of 3d transition metal ions:
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