Akademik

any of the chemically inert gaseous elements of the helium group in the periodic table

↑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

ˌnoble ˈgas 7 [noble gas] (also iˌnert ˈgas, ˈrare gas) noun (chemistry)

any of a group of gases that do not react with other chemicals. ↑argon, ↑helium, ↑krypton and ↑neon are noble gases.

See also: ↑inert gas ▪ ↑rare gas