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The calculated spin only magnetic moment...

The calculated spin only magnetic moment of `Cr^(2+)` ion is

A

3.87 BM

B

4.90 BM

C

5.92 BM

D

2.84 BM

Text Solution

Verified by Experts

The correct Answer is:
B
Cr : `3d^(5)4s^(1), Cr^(2+):3d^(4)` has four unpaired electrons.
`mu=sqrt(n(n+2))=sqrt(4(4+2))=sqrt(24) approx 4.90 B.M.`
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