The magnetic moment is associated with its spin angular momentum and orbital angular momentum. Spin only magnetic moment value of Cr3+ ion is:

1. 2.87 BM 2. 3.87 BM
3. 3.47 BM 4. 3.57 BM
NEETprep Answer: 
The magnetic momentis associated with its spin angular momentum and orbital angular momentum.
Spin only magnetic momentvalue of Cr3+ ion is 3d3
Hence, magnetic moment (μ)=n(n+2)BM
=3(3+2)=15
=3.87BM