Verified Solution • 2025–26 Session moderate

QJEEAdv08Ch43ad: JEE Advanced 2008 Chemistry - Class 12 JEEAdv08Ch43ad Solution: Statement 1 : Pb compounds are stronger oxidising agents than…

Statement 1 : Pb 4+^{4+} compounds are stronger oxidising agents than Sn 4+^{4+} compounds.

and

Statement 2 : The higher oxidation states for the group 14 elements are more stable for the heavier members of the group due to 'inert pair effect'.

Multiple Choice Options

  • A Statement 1 is True, Statement 2 is True; Statement 2 is correct explanation for Statement 1.
  • B Statement 1 is True, Statement 2 is True; Statement 2 is NOT correct explanation for Statement 1.
  • C Statement 1 is True, Statement 2 is False.
  • D Statement 1 is False, Statement 2 is True.

Step-by-Step Verified Solution

In p-block elements, inert pair effect is observed, due to which lower oxidation state becomes more stable on going down the group. In 14th group (C, Si, Ge, Sn, Pb) Pb is placed at lower position than Sn, that's why lower oxidation state is more stable for lead (Pb 2+^{2+} ) and Sn +4^{+4} is more stable than Pb +4^{+4} . So, Pb +4^{+4} compounds are stronger oxidising agents than Sn +4^{+4} compounds. Lower oxidation for the group 14th elements are more stable for the heavier members.

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