NEETChemistry-Coordination Compounds
NEET Chemistry Magnetic Properties MCQ Question
Type: MCQ-numerical-Medium-Class 12
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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