NEET Chemistry Transition Elements MCQ Question with Solution

Calculate the magnetic moment (in BM) of a transition metal ion with 3 unpaired electrons using the spin-only formula.

A

87

B

90

C

83

D

5.92

Correct Answer

Option A

Detailed Explanation

The magnetic moment is calculated using the spin-only formula μ = √(n(n+2)), where n is the number of unpaired electrons. For n = 3, μ = √(3(3+2)) = √15 = 3.87 BM.

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