STANDARDChemistry-Magnetic Properties
STANDARD Chemistry Spin-Only Magnetic Moment MCQ Question
Type: MCQ-numerical-Medium
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 B.M.
B
3.87 B.M.
C
3.47 B.M.
D
3.57 B.M.
Correct Answer
Option B
Detailed Explanation
Cr³⁺ has a 3d³ 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⁺, n = 3, so μ = √15 = 3.87 B.M.
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