D-And F-Block Elements Ques 501
Question: Because of lanthanoid contraction, which of the following pairs of elements have nearly same atomic radii- (Numbers in the parenthesis are atomic numbers).
Options:
A) $ Zr( 40 ) $ and $ Nb( 41 ) $
B) $ Zr( 40 ) $ and $ Hf( 72 ) $
C) $ Zr( 40 ) $ and $ Ta( 73 ) $
D) $ Ti( 22 ) $ and $ Zr( 40 ) $
Show Answer
Answer:
Correct Answer: B
Solution:
Due to lanthanoid contraction atomic radii of Zr and Hf is almost similar.
