Inertgases like neon and argon have eight electrons in their outer shell.
像氖和氩这样的惰性气体,在它们的外电子层有8个电子。
《柯林斯英汉双解大词典》
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Versus looking at, for example, helium or neon or argon, these are all inertgases, inert meaning essentially do not react, those were grouped together in the periodic table.