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  • The magnetic moment is associated with its spin angular momentum and orbital angular momentum. Spin only magnetic moment value of {Cr}^{3+} ion is___________. (i) 2.87 B.M. (ii) 3.87 B.M. (iii) 3.47 B.M. (iv) 3.57 B.M

The magnetic moment is associated with its spin angular momentum and orbital angular momentum. Spin only magnetic moment value of \text {Cr}^{3+} ion is___________.

(i) 2.87 B.M.

(ii) 3.87 B.M.

(iii) 3.47 B.M.

(iv) 3.57 B.M

Answers (1)

The answer is the option (ii). The determination of magnetic moment is done by the number of unpaired electrons. The \mu is associated with its spin angular and orbital angular momentum.

Spin only magnetic moment value of \text {Cr}^{3+} ion is \text {3d}^{3}

Hence, magnetic moment \left ( \mu \right )=\sqrt{n\left ( n+2 \right )}BM=\sqrt{3\left ( 3+2 \right )}=\sqrt{15}=3.87\; BM
 

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