Intermolecular Forces of Attraction (IMFA)

London dispersion forces (LDFs) are one of the common intermolecular forces of attraction. Which of the following is NOT a characteristic of London dispersion forces?

LDF's are the weakest intermolecular force. What is the fundamental cause of LDFs?

Dipole-dipole forces influence the physical properties of substances such a boiling point. How do dipole-dipole forces affect the boiling point of a substance?

Dipole-dipole forces occur between certain polar molecules. Which of the following molecules exhibits dipole-dipole forces?

Dipole-dipole forces are stronger than LDFs in polar molecules. What is the primary difference in the forces between HCl and Cl2?

Which of the following statements about dipole-dipole forces is true?

What makes hydrogen bonding a particularly strong dipole dipole force?

A salt crystal dissolves in water. What is the primary intermolecular force involved in this process?

Ion-dipole forces are stronger than dipole-dipole forces. Which of the following pairs of molecules have the strongest ion-dipole forces?

Ion-dipole forces are strongest when ions are highly charged. Which would create the stronger ion-dipole interaction with water: Na+ or Al3+?

When comparing the boiling points of hydrogen chloride (HCl) and hydrogen fluoride (HF), which factor contributes to HF having a higher boiling point?

A solution of potassium iodide (KI) in water is prepared. What intermolecular force is responsible for the dissolution of KI in water?

Which of the following correctly ranks the intermolecular forces from weakest to strongest?

What type of intermolecular force is primarily responsible for the properties of liquid ammonia (NH3)?

Hydrogen bonding is particularly strong in which of the following compounds?

Intermolecular forces are attractive forces present in between molecules. The first two are collectively known as _____ forces of attraction, named after the Dutch scientist Johannes Van der Waals

_____ forces are the weakest type of IMFA and are present in between all electrically neutral molecules - polar and nonpolar molecules. This IMFA was named after the German American physicist Fritz London who proposed the origin of this intermolecular attractions.

When more _____ are present in a molecule, the stronger the LDFs are. This is because larger molecules are more polarized.

_____ is the measure of how easy it is to distort the electron distribution of a molecule. In large molecules, the electrons are less tightly held by the attraction with the nucleus so they can form temporary dipoles easier.

LDFs are caused by _____ in the electron distribution within atoms or molecules. This happens when an atom, which is usually non-polar, becomes polar due to the continual motion of its electrons resulting in a _____ dipole. The temporary dipole of a molecule induces instantaneous dipoles to neighboring molecules.