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氩、氦、氪、氖、氙、氡是在1894—1900年间陆续发现的。从本世纪初叶以来,在大量实验工作的基础上,原子结构理论逐步得到发展。人们开始认识到,物质的化学性质一般由原子核外的最外层电子所决定,建立了原子价的电子理论。而这六个元素的原子,其最外电子层恰好形成了“稳定的八隅体”结构。这对它们不易参加化学反应的特性,得到一定程度的解释。遗憾的是,这种概念被绝对化了,硬把这六种元素划为不
Argon, helium, krypton, neon, xenon and radon were discovered one after another from 1894 to 1900. Since the beginning of this century, based on a large amount of experimental work, the atomic structure theory has been gradually developed. People began to realize that the chemical nature of matter is generally determined by the outermost electrons outside the nucleus, establishing the electronic theory of atomic valence. And these six elements of atoms, the outermost electron layer just formed a “stable octant body” structure. This has some degree of explanation for their inability to participate in chemical reactions. Unfortunately, this concept has been absolute, hard to the six elements designated as no