It is noticed that 
is more stable than 
but 
is less stable than 
. Observe the following reactions.
Identify the correct set from the following
Text Solution
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The stability of oxidation states in Group 14 is governed by the inert pair effect, which increases down the group.
For Lead 
, the +2 oxidation state is more stable than the +4 state 
.
In the reaction 
is being reduced to 
and 
is being oxidized to 
. Since the product contains the more stable oxidation state, the reaction is spontaneous, meaning 
.
For Tin ( Sn ), the +4 oxidation state is more stable than the +2 state ( 
).
In the reaction 
, the stable 
is being converted into the less stable 
. This process is non-spontaneous, meaning 
.
Thus, the correct set is 
and 
.
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