electron shell

同根派生

The chemical properties of an atom are determined by the outermost electron shell.
一个原子的许多性质都是由其最外层的电子所确定的。
Except for the transitional elements, valency electrons are in the outermost electron shell.
除去过渡元素外，价电子位于最外面的电子层。
Through analysis on the structure of valence electron shell, the atom radius, the bonding orbital and other important parameters, this paper discusses the irregularity in the second circle of nonmetal elements and the irregular courses.
摘要本文通过对第二周期元素价电子层结构、原子半径、成键轨道及其重要参数的分析，讨论了第二周期非金属元素的不规则现象，并且分析了产生这些不规则性的原因。
By calculating the number of va-lence electron shell,we can gain the geometry array of the electronic pair,and then judge the molecular structures.
计算出价层电子对数,得到电子对的几何排布,从而判断出分子的几何构型。
Complete electron shell of the Na atom(sodium atom)
钠原子满(电子)壳层。