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Questions  

Consider the following complexes

I) CoNH36+3

II) CoH2O6+3

III) CoCN6-3

the increasing order of wavelength of light absorbed is

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By Expert Faculty of Sri Chaitanya
a
II, I, III
b
I, II, III
c
III, II, I
d
III, I, II

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detailed solution

Correct option is D

Energy(or frequency) of light absorbed ∝ field strength of ligand; Wavelength of light absorbed ∝1field strength of ligand; Field strength of CN->NH3>H2O ∴Order of  wavelength absorbed : III


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