The value of the ‘spin only’ magnetic moment is 2.84 BM

• Coordination Compounds

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

1. d⁵ (in strong ligand field)
2. d³ (in weak as well as in strong fields)
3. d⁴ (in weak ligand field)
4. d⁴ (in strong ligand field)

Answer

Spin only magnetic moment = √(n(n+2)) B.M.

Where n = number of unpaired electron

Given, √(n(n+2)) = 2.84

n(n + 2) = 8.0656

n = 2

In an octahedral complex, for a d⁴ configuration in a strong field ligand, number of unpaired electrons = 2

The correct option is D.