The heavier members of `13` and `14` groups besides the group oxidation state also show another oxidation state. Down the group `(darr)`, the stability of higher oxidation state increases. This concept which is commonly called inert pair effect has been used to explain many physical and chemical properties of the element of these groups. Which among the following is the strongest oxidising agent ?A. `SiO_(2)`B. `GeO_(2)`C. `SnO_(2)`D. `PbO_(2)`

The heavier members of `13` and `14` groups besides the group oxidatio

1.	The heavier members of `13` and `14` groups besides the group oxidation state also show another oxidation state. Down the group `(darr)`, the stability of higher oxidation state increases. This concept which is commonly called inert pair effect has been used to explain many physical and chemical properties of the element of these groups. Which among the following is the strongest oxidising agent ?A. `SiO_(2)`B. `GeO_(2)`C. `SnO_(2)`D. `PbO_(2)`
Answer» Correct Answer - D Oxidation state of `Pb` in `PbO_(2)` is `+4`. Due to inert pair effect, down the group `(darr), +2` oxidation state is more stable than `+4` oxidation state. `PbO_(2) rarr PbO + O_(2)`. Hence, `PbO_(2)` behaves as strongest reducing agent.