Match List-I with List-II (CFSE values in units of ):

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

with (I) (II) (III) (IV)

| List-I (Complex) | List-II (CFSE / ) |
|------------------|------------------------------|
|

Question

Match List-I with List-II (CFSE values in units of ):

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

with (I)  (II)  (III)  (IV)

| List-I (Complex) | List-II (CFSE / ) |
|------------------|------------------------------|
| (A)  () | (IV)  |
| (B)  () | (I)  |
| (C)  ( HS) | (II)  |
| (D)  ( HS) | (III)  |

Canvas Classes · Accepted Answer

Strategy:
 Calculate the Crystal Field Stabilization Energy (CFSE) for each high-spin octahedral complex.
, where  is electrons in  and  is electrons in .

Step 1: Evaluate each complex
- (A) :  (). Conf: . CFSE = . (Matches IV).
- (B) :  (). Conf: . CFSE = . (Matches I).
- (C) :  (). High-spin due to weak : . CFSE = . (Matches II).
- (D) :  (). High-spin . CFSE = . (Matches III).

Step 2: Compile matching
A-IV, B-I, C-II, D-III.

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