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Unformatted text preview: Those forces are van der Waals forces. In ClF, the magnitude of the forces is the average of those for F 2 and Cl 2 . Therefore, the boiling point of ClF is lower than that of Cl 2 . 3. Of the three molecules shown, H 2 O 2 and H 2 SO 4 meet the hydrogen bonding criteria. 4. Solid H 2 O (ice) has two hydrogen bonds per molecule, while HF has only one. Even though the HF hydrogen bonds are stronger, the number of hydrogen bonds in ice is greater and so is the energy needed to melt ice (break the hydrogen bonds)....
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