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What is the magnetic moment of K(3)[FeF(...

What is the magnetic moment of `K_(3)[FeF_(6)]` ?

A

5.91 BM

B

4.89 BM

C

3.87 BM

D

6.92 BM

Text Solution

Verified by Experts

The correct Answer is:
A
`K_(3)[FeF_(6)]`
`Fe^(3+) =[Ar]3d^(5)4s^(0)`

Number of unpaired electrons `=5`
Magnetic moment `= sqrt(n(n+2))= sqrt(5(5+2))`
`= sqrt(35)= 5.91 B.M.`
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