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The spin magnetic moment of cobalt in th...

The spin magnetic moment of cobalt in the compound `Hg[Co(SCN)_(4)]` is

A

`sqrt(3)`

B

`sqrt(8)`

C

`sqrt(15)`

D

`sqrt(24)`

Text Solution

Verified by Experts

The correct Answer is:
C
`Hg[Co(SCN)(4)]rarrHg^(2+)+[Co(SCN)_(4)]^(2-)`
Oxidation state of cobalt `x+4xx(-1)=-2`
`=x4-2=+2`
In `+2` oxidation state cobalt have `3` upaired electron `(d^(7)` electronic configurations).
So `mu_(S)=sqrt(3(3+2))=sqrt(15)`s B.M.
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