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Spin only magnetic moment in B.M. of the...

Spin only magnetic moment in B.M. of the compound Hg(II)[Co`(SCN)_(4)`] is-

A

`sqrt3`

B

`sqrt15`

C

`sqrt24`

D

`sqrt8`

Text Solution

Verified by Experts

The correct Answer is:
b
`Hg[Co(SCN)_(4)],Co(Z=27)implies 3d^(7) 4s^(7) ,co^(2+) =3d^(7)`
Unpaired electrons `n=3`
Magnetic moment =`=sqrt(n(n+2)) =sqrt(3(3+2))=sqrt15 BM`
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