Q. 154.0( 4 Votes )

The magnetic mome A. 2.87 B.M.

B. 3.87 B.M.

C. 3.47 B.M.

D. 3.57 B.M.

Answer :

Electronic configuration of Cr3+ is [Ar]3d3. The number of electrons that contribute towards spin only magnetic moment are 3. Spin only magnetic moment can be calculated using this formula



Where n is the number of unpaired electrons. So for Cr3+ , the number of unpaired electrons equals 3.


= 3.87 B.M

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