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Noun inert gas has 1 sense
noble gas, inert gas, argonon - any of the chemically inert gaseous elements of the helium group in the periodic table--1 is a kind of chemical element, element; gas
 --1 has particulars:
 |  | argon, Ar, atomic number 18; helium, He, atomic number 2; krypton, Kr, atomic number 36; neon, Ne, atomic number 10; radon, Rn, atomic number 86; xenon, Xe, atomic number 54 | 
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