The ratio of spin-only magnetic moment values is

Question

The ratio of spin-only magnetic moment values  is

Canvas Classes · Accepted Answer

Strategy:
 Calculate the magnetic moments for both Chromium complexes and find their ratio.

Step 1: Find  for 
 has a  configuration. Even though  is a strong field ligand, the 3 electrons simply occupy the three available  orbitals singly according to Hund's rule.
Unpaired electrons = 3. .

Step 2: Find  for 
 has a  configuration. With the weak field ligand , the 3 electrons again occupy the  orbitals singly.
Unpaired electrons = 3. .

Step 3: Calculate ratio
.

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