Q. The most stable hydride is
A) NH_{3}
B) PH_{3}
C) AsH_{3}
D) SbH_{3}
Explanation
(a)
Thermal stability of the hydrides decrease gradually from NH_{3} to BiH_{3} .This is due to the reason that atomic size of the element increases down the group and N—H bond strength decreases.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.