Published by:
CGP EDU Academic Team
Published on: August 13, 2026
The stability of +1 oxidation state among 
, In IV and Tl increases in the sequence
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
This is due to inert pair effect or tendency of 
electrons do not participate in bond formation. This tendency of +3 oxidation state decreases on moving down the group while the stability of +1 oxidation state increases.
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