The pair of metal ions that can give a spin only magnetic moment of 3.9 BM for the complex , is:

Question

Canvas Classes · Accepted Answer

Strategy:
 A magnetic moment of 3.9 BM corresponds to 3 unpaired electrons. Determine which pair of metals both have exactly 3 unpaired electrons in a weak field.

Step 1: Find target number of electrons
.

Step 2: Evaluate the high-spin states (since  is a weak field ligand)
- :  configuration. In an octahedral field, .
- :  configuration. In a weak octahedral field, arrangement is . .
- :  configuration. High-spin arrangement is . .
- :  configuration. High-spin arrangement is . .

Step 3: Con

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