What is the spin-only magnetic moment of a divalent transition metal ion with electronic configuration in the high-spin state?

Answer and explanation

Correct answer: A.

  1. Step 1: In a high-spin ion, Hund's rule gives five orbitals populated as: .
  2. Step 2: The number of unpaired electrons is .
  3. Step 3: Spin-only formula: .
Answer
.
Why not the others: corresponds to ; corresponds to ; and corresponds to .

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