Intermolecular Forces Review

Which noble gas has the highest boiling point and why?

• Kr (krypton) due to its smaller size and lower polarizability.

• Ar (argon) because it has the lowest molecular weight.

• Xe (xenon) has the highest boiling point due to its larger size and greater polarizability.

• Ne (neon) because it is the most abundant noble gas.

What are London dispersion forces?

• Weak intermolecular forces arising from temporary dipoles due to electron movement.

• Strong forces that hold molecules together in ionic compounds.

• Attractive forces between molecules with permanent dipoles.

• Repulsive forces that occur between charged particles.

Which molecule has the weakest intermolecular forces: HCl, NH3, or Br2?

• HCl

• NH3

• Br2

• CH4

What is the role of electronegativity in hydrogen bonding?

• It determines the color of the bond.

• It affects the strength of the bond by creating a dipole when bonded to hydrogen.

• It has no effect on hydrogen bonding.

• It increases the temperature of the bond.

What is the primary intermolecular force in nonpolar molecules?

• Hydrogen bonding

• Dipole-dipole interactions

• London dispersion forces

• Ionic bonding

What is the relationship between boiling point and intermolecular forces?

• Substances with stronger intermolecular forces have lower boiling points because less energy is required to overcome these forces.

• Substances with weaker intermolecular forces have higher boiling points because more energy is required to overcome these forces.

• Generally, substances with stronger intermolecular forces have higher boiling points because more energy is required to overcome these forces during the phase change from liquid to gas.

• Boiling point is unrelated to intermolecular forces and depends solely on molecular weight.

What is the effect of intermolecular forces on the state of matter?

• Stronger intermolecular forces typically result in substances being solid or liquid at room temperature.

• Weaker intermolecular forces always result in substances being solid at room temperature.

• Intermolecular forces have no effect on the state of matter.

• Stronger intermolecular forces lead to substances being gases at room temperature.

What is the significance of boiling point in determining intermolecular forces?

• The boiling point has no relation to intermolecular forces.

• Higher boiling points suggest weaker intermolecular forces.

• The boiling point indicates the molecular weight of a substance.

• Higher boiling points suggest stronger intermolecular forces.

What is hydrogen bonding?

• A weak interaction between two hydrogen atoms.

• A strong type of dipole-dipole interaction involving hydrogen and electronegative atoms.

• A covalent bond between two hydrogen atoms.

• An ionic bond between hydrogen and oxygen.

What type of intermolecular forces does NH3 exhibit?

• Hydrogen bonding only

• Dipole-dipole interactions only

• Hydrogen bonding, dipole-dipole interactions, and London dispersion forces

• London dispersion forces only