1.4 - Intermolecular Forces

Question 1

Intermolecular Definition

Answer 1

Between neighbouring molecules (as opposed to intramolecular).

Question 2

Van der Waals’ forces Definition

Answer 2

The attraction between instantaneous and induced dipole son neighbouring molecules.

Question 3

Permanent Dipole-Dipole Attraction Definition

Answer 3

Attraction between the positive end, δ+, of the permanent dipole on a molecule with the negative end, δ-, of the permanent dipole of a neighbouring molecule.

Question 4

Hydrogen Bond Definition

Answer 4

The attraction between a lone pair of electrons on a very electronegative atom (i.e. N,O, F) in one molecule and a hydrogen atom in a neighbouring molecule, in which the hydrogen atom is covalently bonded to a very electronegative atom (N,O,F).