You're right to think that hydrogen fluoride (HF) might have a higher boiling point than water (H₂O) because of the strong hydrogen bonds it can form. However, the boiling point of water is significantly higher (100 °C) than that of hydrogen fluoride (-19.5 °C), and here's why:

1. Extensive Hydrogen Bonding in Water:

* More hydrogen bonds per molecule: Water molecules can form four hydrogen bonds with neighboring molecules. Each oxygen atom has two lone pairs and two hydrogen atoms, allowing it to interact with four other molecules.

* Stronger hydrogen bonds: The oxygen atom in water is more electronegative than the fluorine atom in hydrogen fluoride. This means that the oxygen atom attracts electrons more strongly, making the O-H bond more polar and the hydrogen bonds stronger.

2. Limited Hydrogen Bonding in Hydrogen Fluoride:

* Fewer hydrogen bonds per molecule: While hydrogen fluoride can form hydrogen bonds, each molecule can only form two hydrogen bonds due to having only one hydrogen atom.

* Weaker hydrogen bonds: The fluorine atom, being less electronegative than oxygen, makes the H-F bond less polar and the resulting hydrogen bonds weaker compared to water.

In summary:

* Water has a higher boiling point due to its ability to form a more extensive network of stronger hydrogen bonds. This strong intermolecular attraction requires more energy to overcome, leading to a higher boiling point.

Let me know if you have any more questions!