NEET2021Chemistry-d-Block Elements
NEET 2021 Chemistry Lanthanide Contraction MCQ Question
Type: MCQ-conceptual-Medium-Class 12
Zr (Z=40) and Hf (Z=72) have similar atomic and ionic radii because of:
A
belonging to same group
B
diagonal relationship
C
lanthanoid contraction
D
having similar chemical properties
Correct Answer
Option C
Detailed Explanation
The lanthanoid contraction causes the atomic and ionic radii of elements following the lanthanides to be similar.
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