P-Block Elements Ques 395
Question: The boiling points of the following hydrides follow the order of
[DPMT 2004]
Options:
A) $ NH_3>AsH_3>PH_3>SbH_3 $
B) $ SbH_3>AsH_3>PH_3>NH_3 $
C) $ SbH_3>NH_3>AsH_3>PH_3 $
D) $ NH_3>PH_3>AsH_3>SbH_3 $
Show Answer
Answer:
Correct Answer: C
Solution:
Boiling points of $ SbH_3(254\ K),\ NH_3(238\ K) $ , $ AsH_3(211\ K) $ and $ PH_3\ (185\ K) $ therefore boiling points are of the order $ SbH_3>NH_3>AsH_3>PH_3 $ .
