Homoleptic octahedral complexes of a metal ion ' ' with three monodentate ligands absorb wavelengths in the region of green , blue and red respectively . The increasing order of the ligand strength is :
CFSE in octahedral complex -
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We know,
Order of
So, drder will be
Colour in coordination compounds -
The colour of the complex is complimentary to that which is absorbed
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