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Question: The value of the spin only magnetic moment for one of the following configurations is 2.84 BM. The c...

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

A

d5 (in strong field Ligand)

B

d3 (in weak as well as strong. field)

C

d4 (in weak field Ligand)

D

d4 (in strong Ligand field)

Answer

d4 (in strong Ligand field)

Explanation

Solution

The given value of m (spin only)

= (n+2)n\sqrt{(n + 2)}n

= 2.84 BM

which corresponds to n = 2. Among the given configurations, d4 system in strong ligand field will have 2-unpained e– in t2g set of orbitals as shown below.