One Water molecule can form maximum ______hydrogen bonds.
Correct answer: C. 4
- A. 2
- B. 3
- C. 4
- D. None
Explanation
One water molecule can donate two hydrogen bonds through its two hydrogen atoms and accept two through the two lone pairs on oxygen, giving a maximum of 4 hydrogen bonds. The likely distractor is 2, which counts only the bonds donated by the hydrogen atoms and ignores oxygen's accepting ability.
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About Hydrogen Bonding
Hydrogen bonding is the strong attraction between hydrogen attached to nitrogen, oxygen or fluorine and an electronegative atom in the same or another molecule. It explains unusual boiling points, viscosity, surface tension, water's properties and the difference between intermolecular and intramolecular hydrogen bonding.
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