Intermolecular Forces

Front

What are intermolecular forces?

Back

Intermolecular forces are the forces of attraction or repulsion between neighboring particles (molecules, atoms, or ions). They play a crucial role in determining the physical properties of substances.

Front

What is hydrogen bonding?

Back

Hydrogen bonding is a type of strong dipole-dipole attraction that occurs between molecules when hydrogen is bonded to highly electronegative atoms like nitrogen, oxygen, or fluorine.

Front

Does CH4 have hydrogen bonding?

Back

No, CH4 (methane) does not have hydrogen bonding because it does not contain highly electronegative atoms bonded to hydrogen.

Front

What is the strongest type of intermolecular force?

Back

Ionic bonds are the strongest type of intermolecular force, followed by hydrogen bonds, dipole-dipole interactions, and London dispersion forces.

Front

What is the relationship between intermolecular forces and boiling/melting points?

Back

Higher intermolecular forces result in higher boiling and melting points because more energy is required to overcome these forces.

Front

What happens to the boiling point as intermolecular forces weaken?

Back

The boiling point decreases as intermolecular forces weaken.

Front

What type of intermolecular force is present in NaF?

Back

NaF exhibits ionic bonding, which is the strongest type of intermolecular force.

Front

Why does water have a higher boiling point than ammonia?

Back

Water has stronger intermolecular forces (hydrogen bonds) compared to ammonia, leading to a higher boiling point.

Front

What are dipole-dipole interactions?

Back

Dipole-dipole interactions are attractive forces between the positive end of one polar molecule and the negative end of another polar molecule.

Front

What are London dispersion forces?

Back

London dispersion forces are weak intermolecular forces that arise from temporary dipoles in molecules, occurring in all substances but are the only forces in nonpolar molecules.