Q. Which of the following trivalent ion has the largest atomic radii in the lanthanide series?

A) Ce
B) Pm
C) La
D) Lu
Explanation

The correct answer is Option C: La.

A detailed explanation for this question is being prepared.

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.