The correct oder of reducing abilities of hydrides of V group elements is,

Options

A. `NH_(3) lt PH_(3) lt AsH_(3) lt SbH_(3) lt BiH_(3)`
B. `NH_(3) gt PH_(3) gt AsH_(3) gt SbH_(3) gt BiH_(3)`
C. `NH_(3) lt PH_(3) gt AsH_(3) gt SbH_(3) gt BiH_(3)`
D. `SbH_(3) gt BiH_(3) gt AsH_(3) gt NH_(3) gt PH_(3)`

Answer

A

Explanation

Reducing character of hydrides`prop(1)/("Stability of hydrides")`
and follows the order: `NH_(3) lt PH_(3) lt AsH_(3) lt SbH_(3) lt BiH_(3)`.
Since ammonia is stable, it has least reducing ability.