NEET Chemistry Magnetic Properties MCQ Question with Solution

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

A

2.87 BM

B

3.87 BM

C

3.47 BM

D

3.57 BM

Correct Answer

Option A

Detailed Explanation

Cr³⁺ has a d³ configuration. The spin-only magnetic moment is calculated using the formula μ = √n(n+2), where n is the number of unpaired electrons. For Cr³⁺, μ = √3(3+2) = 2.87 BM.

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