6. (3 POINTS) I. The freezing point of water at sea level is higher than that at the top of a mountain. II. The intermolecular forces in liquid \\( \\mathrm{HF} \\) are weaker than those in liquid \\( \\mathrm{HC} \\ell \\). III. In the formation of a mixture, if fores of attraction between unlike molecules exceed those between like molecules, a solution with a negative value of \\( \\Delta \\mathrm{H}_{\\text {soln }} \\) results. Which of the statements given above is/are false? (Write the statement number(s))