Which kinds of intermolecular forces exist between propane molecules? I.dispersion forces
II)dipole-dipole interactions
III)ion-dipole interactions
A)I only
B)II only
C)III only
D)I,II,and III
E)I and III

Question

Quizplus · Accepted Answer

Propane molecules are nonpolar and do not have a permanent dipole moment, so there are no dipole-dipole or ion-dipole interactions. The only intermolecular force present between propane molecules is dispersion force, which is caused by temporary dipoles induced by the fluctuation of electrons in the molecules. Therefore, the correct choice is A) I only.

Which Kinds of Intermolecular Forces Exist Between Propane Molecules? I