GKFix MCQ Question

Why is Cr^2+ a stronger reducing agent than Fe^2+?

• A. Cr^2+ has fewer electrons than Fe^2+.
• B. Cr^2+ gets oxidized to the more stable d^3 configuration (Cr^3+), while Fe^2+ gets oxidized to the less stable d^5 configuration (Fe^3+).
• C. Fe^2+ has a higher atomic number.
• D. Cr^2+ is more electronegative than Fe^2+.