The value of the 'spin only' magnetic moment for one of the following configurations is 2.82 B.M. The correct one is

Options

A. `d^(5)` (in strong ligand field)
B. `d^(3)` (in weak as well as in storng fields)
C. `d^(4)` (in weak ligand fields)
D. `d^(4)` (in storng ligand fields)

Answer

D

Explanation

`mu=sqrt(n(n+2))=sqrt(3)=1.73` B.M.

`mu=sqrt(3(5))=sqrt(15)=3.87` B.M.
`d^(4)-`in weak ligand field

`mu=sqrt(4(6))=sqrt(24)=4.89 `B.M.

`mu=sqrt(2(4))=sqrt(8)=2.82` B.M.