Word | Noun | Adjective | Verb | Adverb |
---|---|---|---|---|
noble gas | Yes | No | No | No |
atomic number 2 | Yes | No | No | No |
noble gas (noun) | atomic number 2 (noun) |
---|---|
any of the chemically inert gaseous elements of the helium group in the periodic table | a very light colorless element that is one of the six inert gasses; the most difficult gas to liquefy; occurs in economically extractable amounts in certain natural gases (as those found in Texas and Kansas) |