Why is the boiling point of water so much higher than that of the other hydrogen compounds of group VI of the Periodic Table?

Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Chapter10: Liquids And Solids
Section: Chapter Questions
Problem 9E: Why do the boiling points of the noble gases increase in the order HeNeArKrXe?
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Why is the boiling point of water so much higher than that of the other hydrogen compounds of group VI of the Periodic Table?

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Water contains O atom which is highly electronegative in the whole group VI. Because of the polar nature of water molecule, these molecules held by intermolecular hydrogen bonding in water. As a result, the water molecules are joined together in an extensive three Dimensional network. 

In this arrangement, each oxygen is tetrahedrally surrounded by four hydrogens atoms; two by covalent and two by H-bonds.

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