GKFix MCQ Question

Why are Mn²⁺ compounds generally more stable than Fe²⁺ compounds towards oxidation to the +3 state?

• A. Fe²⁺ has a more stable electron configuration.
• B. The atomic size of Mn is larger.
• C. The half-filled d orbital in Mn²⁺ (3d⁵) provides extra stability.
• D. Mn has a lower electronegativity.