The pair in which both the species have the same magnetic moment (spin only) is:

Question

Canvas Classes · Accepted Answer

Strategy:
 Determine the -electron count and ligand field to find matching numbers of unpaired electrons.

Step 1: Analyze the specific pair in option (1)
- :  (), weak field  high-spin ()  4 unpaired electrons ().
- :  (), weak field  high-spin ()  4 unpaired electrons ().
Both have exactly 4 unpaired electrons.

Step 2: Check standard pairs to confirm
-  (, 5 unpaired) and  (4 unpaired). Mismatch.
This confirms the first pair matches perfectly.

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