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什么是八位数规则?简单解释 - Practical Tips

什么是八位数规则?简单解释

by Tobias

每个化学家都知道什么是八位数规则。在这个实用的提示中,我们向你解释所谓的八电子规则是怎么回事。

到底什么是八位数规则

顾名思义,这个规则是关于电子的。为什么正好是八个电子,原因如下。

  • 该规则涉及周期表中所谓的主族元素,除了氦和氢。
  • 这些元素,例如碳或氧,努力追求惰性气体氖的构型,从而尽量保证外电子数为8。
  • 原子由质子和电子组成。电子位于围绕原子核的轨道上。主族元素的最外层轨道在有八个电子时完全被填满,这些电子也被称为价电子。
  • 这被称为惰性气体构型,并受到追捧,因为它在能量上是稳定的,化学反应经常进行以维持或形成这种构型。

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