GKFix MCQ Question

What is a significant consequence of the lanthanoid contraction on the periodic table?

• A. It causes the radii of the third transition series elements to be very similar to those of the corresponding members of the second series
• B. It increases the reactivity of the first transition series
• C. It makes the Lanthanoids behave like alkali metals
• D. It eliminates the difference in properties between s-block and p-block elements