Simplified absorption spectra of three complexes (i), (ii) and (iii) of ion are provided. Their values are marked as A, B and C respectively. The correct match between the complexes and their value

Question

Simplified absorption spectra of three complexes (i), (ii) and (iii) of  ion are provided. Their  values are marked as A, B and C respectively. The correct match between the complexes and their  values is:
(i) 
(ii) 
(iii) 
(A = shortest λ, B = intermediate, C = longest λ)

Canvas Classes · Accepted Answer

Strategy:
 Use the spectrochemical series to order ligand field stretching (). A stronger ligand produces a larger , which corresponds to a higher energy absorbed, and therefore a shorter wavelength ().

Step 1: Order ligands by field strength
From the spectrochemical series:

-  (weakest field)  smallest   longest wavelength (C).
-  (intermediate field)  intermediate   intermediate wavelength (B).
-  (strongest field)  largest   shortest wavelength (A).

Step 2: Match with complexes
- (i)  corr

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