Question

what intermolecular forces does ch₃ch₂ch₃ exhibit with similar molecules?
dispersion forces, dipole-dipole, and hydrogen bonds
only dispersion and dipole-dipole forces
only dispersion forces
only hydrogen bonding

Explanation:

CH₃CH₂CH₃ (propane) is a nonpolar molecule (symmetric C-H bonds, no net dipole). Nonpolar molecules only exhibit London dispersion forces (weak intermolecular forces from temporary dipoles) with similar molecules. Dipole-dipole forces require permanent dipoles, and hydrogen bonding needs H bonded to N/O/F—neither applies here.

Answer:

only dispersion forces