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Spin only of Mn^(2+) is...

Spin only of `Mn^(2+)` is

A

7 B. M

B

6 B.M

C

1.5 B.M

D

5.9 B.M

Text Solution

Verified by Experts

The correct Answer is:
D
Spin only of `Mn^(2+)` is
Electronic configuration of Mn and `Mn^(2+)` is ,
`""_(25)Mn=[Ar] 3d^(5),4s^(2)`
`""_(25)Mn^(2+)=[Ar]3d^(5), 4s^(0)`
`mu _(eff)=sqrt(n(n+2))B.M`
`=sqrt(5(5+2))=sqrt35=5.9B.M.`
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