Intermolecular Forces The following answer choices can be used in questions 1-3. Each answer may be used once, more than once, or not at all. (A) London dispersion forces (B) Hydrogen bonding (C) Dipole-dipole intermolecular forces (D) Ionic bonding (E) Covalent bonding 1. The interaction that occurs between molecules of water but NOT between molecules of chlorine 2. The interaction that occurs between molecules of hydrogen chloride but NOT between molecules of chlorine 3. The interaction that accounts for the increasing melting and boiling points of the halogens on descending group 17 4. When sodium chloride dissolves in water, which of the following statements is true? I. As part of the process, the lattice energy of the sodium chloride must be overcome. II. The attraction between the sodium and chloride ions and the water molecules can be described as an ion-dipole interaction. III. The polarity of the water molecules is essential to the process. (A) I only (B) II only (C) III only (D) I and II only (E) I, II, and III some 5. Which of the following molecules will have London dispersion forces that form son part of the intermolecular attractions present? 1. Fluorine, F2 II. Ammonia, NH3 III. Hydrogen fluoride, HF (A) I only (B) III only (C) I and II only (D) II and III only (E) I, II, and III 6. Which of the following has the substances listed in order of increasing boiling point? I. Water