GKFix MCQ Question

How does the shielding effect between 4f electrons compare to that between d electrons?

• A. Shielding between 4f electrons is less effective than between d electrons
• B. Shielding between 4f electrons is more effective than between d electrons
• C. Shielding between 4f electrons is equal to that between d electrons
• D. 4f electrons provide perfect shielding