Given below are two statements:\ Statement I : The boiling point of hydrides of group 16 elements f

Question

Given below are two statements:\ Statement I : The boiling point of hydrides of group 16 elements follow the order $ \mathrm{H}_2 \mathrm{O}>\mathrm{H}_2 \mathrm{Te}>\mathrm{H}_2 \mathrm{Se}>\mathrm{H}_2 \mathrm{~S} . $ \ Statement II : On the basis of molecular mass $\mathrm{H}_2 \mathrm{O}$ is expected to have lower boiling point than the other members of the group but due to the presence of extensive H -bonding in $\mathrm{H}_2 \mathrm{O}$, it has higher boiling point.\ In the light of the above statements, choose correct answer from the options given below :

Professor PC Thomas Classes · Answer

(a) : $\mathrm{H}_2 \mathrm{O}$ has higher boiling point due to extensive hydrogen bonding. \ Hence, both statements I and II are correct.