GKFix MCQ Question

What is the primary difference in the electronic configurations of Ce³⁺ and Ce⁴⁺ ions?

• A. Ce³⁺ has a 4f¹ configuration, while Ce⁴⁺ has a 4f⁰ configuration
• B. Ce³⁺ has a 4f⁰ configuration, while Ce⁴⁺ has a 4f¹ configuration
• C. Ce³⁺ has a 4f² configuration, while Ce⁴⁺ has a 4f¹ configuration
• D. Ce³⁺ has a 5d¹ configuration, while Ce⁴⁺ has a 4f⁰ configuration