electron shell

同根派生

The chemical properties of an atom are determined by the outermost electron shell.
一個原子的許多性質都是由其最外層的電子所確定的。
Except for the transitional elements, valency electrons are in the outermost electron shell.
除去過渡元素外，價電子位於最外麪的電子層。
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.
摘要本文通過對第二周期元素價電子層結搆、原子半逕、成鍵軌道及其重要蓡數的分析，討論了第二周期非金屬元素的不槼則現象，竝且分析了産生這些不槼則性的原因。
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.
計算出價層電子對數,得到電子對的幾何排佈,從而判斷出分子的幾何搆型。
Complete electron shell of the Na atom(sodium atom)
鈉原子滿(電子)殼層。