Question

Read the following and select one the correct answer.​​​​​​​

Statement I: $P{b}^{4+}$ compounds are stronger oxidizing agents than $S{n}^{2+}$ compounds

Statement II: 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 I and Statement II are both correct. Statement II correctly explains Statement I
• B. Statement I and Statement II are both correct. Statement II does not explain Statement I
• C. Statement II is correct and Statement I is wrong
• D. Statement I is correct and Statement II is wrong

Answer 1

The correct option is D Statement I is correct and Statement II is wrong

As we go down the group, the outermost s electrons of the $n{s}^{2}n{p}^2$ configuration tend not to participate in bond formation. Hence, the stability if +4 oxidation state decreases and the stability of the +2 oxidation state increases (as we descend). This is called inert pair effect.

Statement I is correct and Statement II is wrong