Published by:
CGP EDU Academic Team
Published on: August 13, 2026
Give below are two statements: One is labelled as Assertion A and the other is labelled as
Reason R: Assertion A: The stability order of +1 oxidation state of 
, In and 
is 
.
Reason R: The inert pair effect stabilizes the lower oxidation state down the group.
In the light of the above statements, choose the correct answer from the options given below:
A
is true but 
is false. B
is false but 
is true. C
Both 
and 
are true and 
is the correct explanation of 
.
and are true and is the correct explanation of . D
Both 
and 
are true but 
is NOT the correct explanation of 
.
and are true but is NOT the correct explanation of .
Text Solution
Verified by ExpertsThe correct answer is:
C
The relative stability of +1 oxidation state progressively increases for heavier elements due to inert pair effect.
Stability of 
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