The decrease in stability of higher oxid...

The decrease in stability of higher oxidation state in p-block with increasing atomic number is due to:

increase in bond energy as going down the group.

the reluctance of s-sub shell electrons to participate in the chemical bonding.

both are correct.

Noble gas configuration achieved by lower oxidation state.

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The correct Answer is:

Down the group the inert pair effect is more pronounced on account of enhanced increase in effective nuclear charge.

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Stability of an oxidation state depend on

lonisation energy

Hydration energy

Sublimation energy

All of these

Ionisation energy

Hydration energy

Sublimation energy

All of these

It is electronegative

Of its tendency to form double bond

Of small size

Of large size