The total number of unpaired electrons present in the complex is

Question

The total number of unpaired electrons present in the complex  is

Canvas Classes · Accepted Answer

Strategy:
 Identify the oxidation state and determine the electron configuration for Chromium.

Step 1: Identify configuration
 contains the  ion.
 has a  electron configuration.

Step 2: Analyze pairing
Regardless of whether the ligand is strong or weak field, the first three electrons will singly occupy the three available lower-energy  orbitals (, , ), abiding by Hund's rule.
Arrangement: .
Total unpaired electrons = 3.

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