众所周知,所谓惰性元素系指氦、氖、氩、氪、氙和氡六种元素,因为这些元素都呈气态,化学性不活泼,所以又称为惰性气体。由于它们最外电子层的稳定结构,确信它们的性质不活泼,不起化学反应,于是将这些元素特别区分出来而称为情性元素。这种认识逐渐形成一种比较定型的概念,甚至在教科书中也反映出来,如有的归结为“惰性气体相互之间或是和其他任 As we all know, the so-called inert element refers to the helium, neon, argon, krypton, xenon and radon six elements, because these elements are gaseous, chemically inactive, it is also known as inert gas. Due to the stable structure of their outermost electron-layers, it is believed that their properties are not active and can not react chemically, thus distinguishing these elements in particular as affective elements. This understanding gradually formed a relatively stereotyped concept, even in textbooks are also reflected, if any boiled down to "inert gas or any other