1.

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

Answer»

`d^(4)` (in strong liquid field)
`d^(2)` (in weak LIGAND field)
`d^(3)` (in weak as well ASIN strong fields)
`d^(5)` (in strong ligand field).

SOLUTION :`mu=2.84BM`
This is possible only if n = 2 in the formula :
`mu=SQRT(n(n+2))=sqrt(2(2+2))=2.84`
Two unpaired electrons are possible in strong field octahedral `d^(4)` system : `t_(2g)^(3)e_(g)^(1)`


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