The value of the ‘spin only’ magnetic moment for one of the following configurations is 2.84 BM. The correct one

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d⁵ (in strong ligand field)

d⁴ (in weak ligand field)

d³ (in weak as well as in strong fields)

d⁴ (in strong ligand field)

answer is A.

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Detailed Solution

In the presence of strong field ligand, low spin complex will form means 4 electrons present in d orbitals will be paired up and hence only two unpaired electrons will be left.

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