P-Block Elements Ques 276
Question: Which is least stable
[MP PET 1989]
Options:
A) $ BiH_3 $
B) $ SbH_3 $
C) $ AsH_3 $
D) $ PH_3 $
Show Answer
Answer:
Correct Answer: A
Solution:
$ PH_3>AsH_3>SbH_3>BiH_3 $ On moving down the group bond energy decreases. Hence, stability decreases.