hydrogen bonding

Question

Which of the following has the highest boiling point due to hydrogen bonding?

RankGuru · Accepted Answer

The boiling point of hydride group members usually increases down the group due to increasing van der Waals forces. However, **$H_2O$** is an anomaly.
- Oxygen is highly electronegative and small in size, allowing it to form strong **Intermolecular Hydrogen Bonds**.
- Each water molecule can form up to 4 hydrogen bonds, creating an extensive network.
- $H_2S, H_2Se, H_2Te$ cannot form effective hydrogen bonds as $S, Se, Te$ are larger and less electronegative.
- Consequently, $H_2O$ has a much higher boiling point ($100^\circ C$) than its congeners.

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hydrogen bonding

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