Published by:
CGP EDU Academic Team
Published on: August 13, 2026
Identify a 'Chemical twin' among the following:
A
B
C
Hf-Re
D
Text Solution
Verified by ExpertsThe correct answer is:
D
: 
belonging to second transition series and 
belonging to third transition series have almost similar chemical properties due to lanthanoid contraction. Hence they are called chemical twins.
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