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2004 USNCO Problem 53: Boiling Points

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July 22, 2013

Problem Statement

The boiling points of the halogens, \ce{F2}, \ce{Cl2}, \ce{Br2} and \ce{I2} increase in that order. This is best attributed to differences in
<spanclass=′latex−bold′>(A)</span>covalent bond strengths <span class='latex-bold'>(A) </span>\text{covalent bond strengths}\qquad
<spanclass=′latex−bold′>(B)</span>dipole forces<span class='latex-bold'>(B) </span>\text{dipole forces}\qquad
<spanclass=′latex−bold′>(C)</span>London dispersion forces<span class='latex-bold'>(C) </span>\text{London dispersion forces}\qquad
<spanclass=′latex−bold′>(D)</span>colligative forces<span class='latex-bold'>(D) </span>\text{colligative forces}\qquad
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