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CH1012
COLOUR II
• For d block
T-Metals we can have electronic
transitions within the d orbitals.
• These transitions are lower in energy and correspond to energy in the visible
region.
• The complexes are
therefore coloured due to their absorption
of some of the incident light.
• The variety of
different colours found in TM
complexes are explained by the way in which ligands influence the
energies of the
d-orbitals ("Crystal Field Theory").
d-orbitals ("Crystal Field Theory").
