Spin only magnetic moment of an octahedral complex of Fe²⁺ in the presence of a strong field ligand in BM is:

Question

Canvas Classes · Accepted Answer

Strategy:
 Based on the electronic configuration of  in a strong field, find the number of unpaired electrons.

Step 1: Determine the configuration
 is a  ion.

Step 2: Apply the strong field ligand effect
A strong field ligand creates a large crystal field splitting energy ().
This forces all 6 electrons to pair up in the lower-energy  orbitals.
Arrangement: .

Step 3: Calculate magnetic moment
There are 0 unpaired electrons.
Therefore, the spin-only magnetic moment is 0 BM.

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