The magnetic moment is associated with its spin angular momentum and orbital angular momentum. Spin only magnetic moment value of `Cr^(3+)` ion is

Options

A. 2.87 BM
B. 3.87 BM
C. 3.47 BM
D. 3.57 BM

Answer

B

Explanation

The magnetic moment is associated with its spin angular momentum and orbital angular momentum.
Spin only magnetic moment value of `Cr^(3+)` ion is `3d^(3)`
Hence, magnetic moment `(mu) = sqrt(n(n+2))BM`
`" "=sqrt(3(3+2))=sqrt(15)`
`" "=3.87 BM`