Question: Which one of the following group-15 hydride is the strongest reducing agent?
$\mathrm{AsH}_{3}$
$\mathrm{BiH}_{3}$
$\mathrm{PH}_{3}$
$\mathrm{SbH}_{3}$
Correct Option: , 2
Solution:
Among $15^{\text {th }}$ group hydrides, $\mathrm{BiH}_{3}$ is strongest reducing agent.