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.



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