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.



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