SEARCH Articles Figures Tables Plots showing the high values of mp, bp and heat of vaporization of NH3, H2O and HF when compared with other hydrides. Note also that the mp of CH4 . [Publishers Imprint] [Publishers Imprint] See Also: Plots showing the high values of mp, bp and heat of vaporization of NH3, H2O and HF when compared with other hydrides. Note also that the mp of CH4 .