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.
The noble gases are helium, neon, argon, krypton, xenon, radon, and ununoctium. Noble Gas Properties. The noble gases are relatively nonreactive. This is because they have a complete valence shell. They have little tendency to gain or lose electrons.