Which electronic configuration promotes ferromagnetic ordering in transition metal oxides?

💡 Explanation

When transition metal oxides exhibit half-filled d orbitals, Hund's rule maximizes spin multiplicity because each electron occupies a different orbital with parallel spins, enhancing the exchange interaction that aligns magnetic moments. Therefore, half-filled d orbitals induce ferromagnetism, rather than filled orbitals, empty p orbitals or alternating s and p orbitals which hinder spin alignment.

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