Intermolecular Forces

Front

What are intermolecular forces?

Back

Intermolecular forces are the forces of attraction or repulsion between neighboring particles (atoms, molecules, or ions). They are responsible for the physical properties of substances, such as boiling and melting points.

Front

What are London dispersion forces?

Back

London dispersion forces are weak intermolecular forces that arise from temporary dipoles in molecules. They are present in all molecules but are the only type of intermolecular force in nonpolar molecules.

Front

Which type of intermolecular force is present in all molecules?

Back

London dispersion forces.

Front

What are dipole-dipole forces?

Back

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

Front

What is hydrogen bonding?

Back

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

Front

Which has stronger intermolecular forces: I2 or Cl2?

Back

I2 has stronger intermolecular forces due to its larger size and greater polarizability compared to Cl2.

Front

Do all molecules have London forces?

Back

Yes, all molecules have London dispersion forces, but they may be overshadowed by stronger forces like dipole-dipole or hydrogen bonding.

Front

What type of intermolecular force is present in HCl?

Back

The strongest intermolecular force present in HCl is dipole-dipole.

Front

What is the relationship between molecular weight and London forces?

Back

London forces increase with molecular weight because larger molecules have more electrons, leading to greater polarizability.

Front

Which molecule has only London forces: I2, NH3, OCl2, or SH2?

Back

I2 has only London forces.