P-Block Elements Ques 475
Question: Amongst $ H_2O, $ $ H_2S, $ $ H_2Se $ and $ H_2Te $ the one with the highest boiling point is
[IIT-JEE (Screening) 2000]
Options:
A) $ H_2O $ because of hydrogen bonding
B) $ H_2 $ Te because of higher molecular weight
C) $ H_2S $ because of hydrogen bonding
D) $ H_2Se $ because of lower molecular weight
Show Answer
Answer:
Correct Answer: A
Solution:
Among $ H_2O $,$ H_2S $,$ H_2Se $ and $ H_2 $ Te, the one with the highest boiling point is $ H_2O $ because of intermolecular hydrogen bonding which leads to molecular association and leads to higher energy for boiling.
