1. What is the electron geometry of XeF4 a. Octahedral b. Seesaw c. Square planar d. Tetrahedral 2. What intermolecular force/s of attraction are present in the molecule of hydrazine (N2H4)? a. Dipole-Dipole and London Dispersion Forces b. Dipole-Dipole, Hydrogen Bonding, and London Dispersion Forces c. Hydrogen Bonding only d. London Dispersion Forces and Hydrogen Bonding

8.45 Describe how interactions between molecules affect the vapor pressure of a liquid.

What are intermolecular forces? How do they differ from intramolecular forces? What are dipole-dipole forces? How do typical dipole-dipole forces differ from hydrogen bonding interactions? In what ways are they similar? What are London dispersion forces? How do typical London dispersion forces differ from dipole-dipole forces? In what ways are they similar? Describe the relationship between molecular size and strength of London dispersion forces. Place the major types of intermolecular forces in order of increasing strength. Is there some overlap? That is, can the strongest London dispersion forces be greater than some dipole-dipole forces? Give an example of such an instance.

8.39 Under what circumstances are ion-dipole forces important?