Q11 / 69 · JEE Advanced 2008 (Paper 1) · Chemistry

Statement $1 \mathrm{~Pb}^{4+}$ compounds are stronger oxidising agents than $\mathrm{Sn}^{4+}$ compounds. 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'.

  • A
    Statement 1 is true, Statement 2 is true, Statement 2 is a correct explanation for Statement 1.
  • B
    Statement 1 is true, Statement 2 is true, Statement 2 is not a correct explanation for Statement 1.
  • Correct answer
    C
    Statement 1 is true, Statement 2 is false.
  • D
    Statement 1 is false, Statement 2 is true

Solution

In early p-block, on moving top to bottom, the stability of lower oxidation state increases due to inert pair effect. $\mathrm{Pb}^{4+}$ is less stable than $\mathrm{Sn}^{4+}$, making it a better oxidising agent The lower oxidation state for the group 14 elements are more stable for the heavier members.

Hence, the correct answer is option: 'C'.

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