We’re being asked to identify the intermolecular forces present in HI. Recall that there are several types of intermolecular forces:
1. Ion-dipole interaction – occurs between an ion and a polar covalent compound
2. Hydrogen bonding – occurs in compounds where hydrogen is directly connected to an electronegative element such as N, O, or F
3. Dipole-dipole interaction – occurs between two polar covalent compounds
4. Induced-dipole interaction – occurs when a nonpolar compound interacts with a polar compound
5. Dispersion forces – occurs in all compounds. This is the primary intermolecular force exhibited by nonpolar compounds.
For this problem, we need to do the following steps:
Step 1: Calculate the total number of valence electrons present.
Step 2: Draw the Lewis structure for the molecule.
Step 3: Determine the polarity and IMF of the molecule.
What types of intermolecular forces exist between hydrogen iodide molecules?
I. London forces
II. dipole-dipole interactions
III. hydrogen bonding
IV. ion-dipole interactions
A. I and II only B. I only C. III only D. II and III only E. I, II, and III only
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