D-And F-Block Elements Ques 422
Question: Which of the following trivalent ion has the largest atomic radii in the lanthanide series
[BHU 2002]
Options:
A) La
B) Ce
C) Pm
D) Lu
Show Answer
Answer:
Correct Answer: A
Solution:
Lanthanum is the first element of Lanthanide series so size decreases with increase in atomic number so $ La $ has the largest atomic radii.
