Power Thesaurus 1969, governess thesaurus, Power Thesaurus, viewed 2 September, 2017, <http://www.powerthesaurus.org/governess/synonyms>.
The noble gases have weak interatomic force, and consequently have very low melting and boiling points. They are all monatomic gases under standard conditions, including the elements with larger atomic masses than many normally solid elements.
Under high temperature and low pressure. The molecules of ideal gas dont exert force of attraction from each other. Moreover an ideal gas donot have finite volume. Under high temperature and low pressure, molecules of real gas move apart from each other due to which the force of attraction between them becomes neglegible.