Match List-I with List-II:

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

Number of unpaired electrons: (I) 0 (II) 3 (III) 2 (IV) 4

| List-I (Complex) | List-II (Unpaired electrons) |
|------------------|--------------------

Question

Match List-I with List-II:

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

Number of unpaired electrons: (I) 0 (II) 3 (III) 2 (IV) 4

| List-I (Complex) | List-II (Unpaired electrons) |
|------------------|------------------------------|
| (A)  | (II) 3 |
| (B)  | (IV) 4 |
| (C)  | (I) 0 |
| (D)  | (III) 2 |

Canvas Classes · Accepted Answer

Strategy:
 Determine the number of unpaired electrons based on the -electron count and ligand field effect.

Step 1: Determine unpaired electrons
- (A) :  (). In a  octahedral system, it's always  with 3 unpaired electrons. (Matches II).
- (B) :  (). Weak field  causes high spin (), leaving 4 unpaired electrons. (Matches IV).
- (C) :  (). Strong field  causes low spin (), leaving 0 unpaired electrons. (Matches I).
- (D) :  (). In an octahedral field, it must be , leaving 2 unpaired electrons. (M

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