The substance with the lowest known boiling point (4 K) is helium, an atomic element that has two electrons. Hydrogen isa diatomic molecule and also has two electrons, but its boiling point is significantly higher, at 20.28 K.(a) What is the dominant intermolecular force between a pair of helium atoms and a pair of H2 molecules?(b) Why do you think H2 has a higher boiling point?
The substance with the lowest known boiling point (4 K) is helium, an atomic element that has two electrons. Hydrogen isa diatomic molecule and also has two electrons, but its boiling point is significantly higher, at 20.28 K.(a) What is the dominant intermolecular force between a pair of helium atoms and a pair of H2 molecules?(b) Why do you think H2 has a higher boiling point?
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter7: Molecular Structures
Section7.6: Noncovalent Interactions And Forces Between Molecules
Problem 7.7CE
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The substance with the lowest known boiling point (4 K) is helium, an atomic element that has two electrons. Hydrogen is
a diatomic molecule and also has two electrons, but its boiling point is significantly higher, at 20.28 K.
(a) What is the dominant intermolecular force between a pair of helium atoms and a pair of H2 molecules?
(b) Why do you think H2 has a higher boiling point?
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