Chemistry

Question Analysis
This question tests the student's understanding of the stability associated with half-filled d sublevels and their ability to identify such configurations.

Key Concept Explanation
Half-filled and fully filled d sublevels (3d⁵ and 3d¹⁰) are more stable due to the symmetry and exchange energy. The configuration 3d⁵ is particularly stable because it is half-filled.

Step-by-step Solution
1. Identify the d sublevel in each option.
2. Check if the d sublevel is half-filled (3d⁵).
3. Opti...