Dipole-induced dipole interactions occur between a polar molecule (which has a permanent dipole moment) and a non-polar molecule or atom.
- H2O and alcohol: Both are polar molecules and primarily interact via dipole-dipole interactions and hydrogen bonding.
- Cl2 and CCl4: Both are non-polar molecules, so they interact via London dispersion forces (induced dipole-induced dipole interactions).
- HCl and He atoms: HCl is a polar molecule with a permanent dipole, while Helium (He) is a non-polar noble gas atom. The permanent dipole of HCl induces a temporary dipole in the He atom, leading to dipole-induced dipole interactions.
- SiF4 and He atoms: Both are non-polar, so they interact solely through London dispersion forces.
Therefore, the pair exhibiting dipole-induced dipole interactions is HCl and He atoms.