Q. The trivalent ion having largest size in lanthanide series is

A) Ti
B) Zr
C) Hf
D) La
Explanation

(d)
The trivalent ion having largest size is lanthanum. This is due to lanthanide contraction

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

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