Which of the following are correct?

Options

A. `As^(5+)` salts are better oxidising agents
B. `Tl^(3+)` salts are better oxidising agents
C. `Ga^(o+)` salts are better oxidising agents
D. `Pb^(4+)` salts are better oxidising agents

Answer

B, C, D

Explanation

a. `As^(5+)` is stable, but `Sb^(3+)` `Bi^(3+)` are more stable than `+5 OS`.
b. Due to inert pair effect, `Ti^(o+)` (reduction acts as oxidising agent)
Hence, `Ti^(3+)` acts as oxidising agent.
c. For the same reason `Ga^(3+)` is more stable than `Ga^(o+)`.
d. `Pb^(2+)` is more stable than `Pb^(4+)`, due to inert pair effect. So, `Pb^(4+)` salts are better oxidising agents.