Which one of the following group-

Question:

Which one of the following group-15 hydride is the strongest reducing agent?

1. $\mathrm{AsH}_{3}$

2. $\mathrm{BiH}_{3}$

3. $\mathrm{PH}_{3}$

4. $\mathrm{SbH}_{3}$

Correct Option: , 2

Solution:

Among $15^{\text {th }}$ group hydrides, $\mathrm{BiH}_{3}$ is strongest reducing agent.