Q. Most unstable hydride is
A) NH_{3}
B) PH_{3}
C) AsH_{3}
D) BiH_{3}
Explanation
(d)
In VA group the thermal stability of hydrides decreases from NH_{3} to BiH_{3} hence, BiH_{3} is the most unstable hydride.
NH_{3}> PH_{3}> AsH_{3}>SbH_{3}> BiH_{3}
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.