any of the elements in Group 18 of the periodic table, including helium, neon, argon, krypton, xenon, and radon, characterized by their inert nature and stable electron configurations
文法情報
有生性の状態
無生物
形態的構成
複合語
可算
複数形
noble gases
例
Helium, a noble gas, is known for its low density and is often used in balloons to make them float.
