The boding point of ammonia (NH3) is maximum among the hydrides of group V elements due to:
Correct answer: C. Enhanced electronegative character of Nitrogen
- A. Very small size of Nitrogen
- B. Pyramidal structure of NH3
- C. Enhanced electronegative character of Nitrogen
- D. Enhanced electropositivity of nitrogen
Explanation
The boiling point of ammonia (NH3) is higher compared to the hydrides of other Group V elements because of its stronger intermolecular forces. These forces, called hydrogen bonding, occur between the hydrogen atom in ammonia and the lone pair of electrons on the nitrogen atom. This extra attraction between molecules makes it harder for them to separate and increases the boiling point.
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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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