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The value of 'spin only' magnetic moment...

The value of 'spin only' magnetic moment for one of the following configurations, is `2.84 BM`. The ćorrect one is : `d^4` (in strong ligand field) , `d^2` (in weak ligand fteld) , `d^3` (in weak as well as strong fields) , `d^5` (in strong ligand field)

A

`d^(3)` in a weak octahedral ligand field

B

`d^(4)` in a weak octahedral ligand field

C

`d^(3)` in a strong octahedral ligand field

D

`d^(4)` in a strong octahedral ligand field

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