Published by:
CGP EDU Academic Team
Published on: August 12, 2026
Which is the correct order of thermal stability for 
( 
and Po )?
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
For group 16 elements, the hydrides with higher molar mass (e.g. 
) are less thermally
stable than hydride with lower molar mass (e.g. 
). This is due to the increase in size of central atom, which results to the weakening of 
bond due to increased bond length.Thus, the correct order of thermal stability for 
( 
and Po ) is as follows 
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