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.



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