1.

Give reason: The increased stability of the oxidation state is lowered by 2 units than the group oxidation state in heavier p-block elements.

Answer»
  • The increased stability of the oxidation state lowered by 2 units than the group oxidation state in heavier p-block elements is due to inert pair effect.
  • In these elements, the two s-electrons are involved less readily in chemical reactions.
  • This is because, in heavier p-block elements, the s-electrons of valence shell experience poor shielding than valence p-electrons due to ten inner delectrons.

Hence, the increased stability of the oxidation state is lowered by 2 units than the group oxidation state in heavier p-block elements.


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