Match List I with List II (wavelength of light absorbed in nm):

(A) (B) (C) (D)

with (I) 310 (II) 475 (III) 535 (IV) 600

| List-I (Complex) | List-II (λ absorbed, nm) |
|------------------|----

Question

Match List I with List II (wavelength of light absorbed in nm):

(A)  (B)  (C)  (D)

with (I) 310 (II) 475 (III) 535 (IV) 600

| List-I (Complex) | List-II (λ absorbed, nm) |
|------------------|--------------------------|
| (A)  | (III) 535 |
| (B)  | (II) 475 |
| (C)  | (I) 310 |
| (D)  | (IV) 600 |

Canvas Classes · Accepted Answer

Strategy:
 An inverse relationship exists between the crystal field splitting energy () and the wavelength of absorbed light (): . Stronger fields yield larger  and shorter wavelengths.

Step 1: Order the complexes by 
- (D) : Weak field (), low  oxidation state  Lowest , Longest .
- (A) : Contains one weak field  ligand lowering the average field compared to pure ammine.
- (B) : Hexaammine complex, moderate-strong field.
- (C) : Contains the extremely strong field  ligand  Highest , Shortest .

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