P-Block Elements Ques 371
Question: Which one of the following hydrides is least stable
Options:
A) $ AsH_3 $
B) $ SbH_3 $
C) $ NH_3 $
D) $ PH_3 $
Show Answer
Answer:
Correct Answer: B
Solution:
$ \xrightarrow{NH_3>PH_3>AsH_3>SbH_3>BiH_3} $ Stability decreases down the group because bond energy decreases down the group.