Which of the following cations acts as oxidizing agent ?

Options

A. `Ga^(3+)`
B. `In^(3+)`
C. `Tl^(1+)`
D. `Tl^(3+)`

Answer

D

Explanation

`Tl^(3+)` acts as O. A. i.e gains electrons to change to `Tl^+` as in this oxidation state `6s^2` electrons do not participate in electro valency and is therefore more stable. Tl shows the inert pair effect. Hence `Tl^+` oxidation state is more stable than `Tl^(3+)`