价电子

Three parameters of lanthanide,atomic number Z,valence electron number N,ion radius r,were used to define a new topological index of bond parameter —H_z.

根据镧系元素的原子序数Z、价电子数N、离子半径r提出了一个新的键参数拓扑指数 HZ，并将HZ、镧系元素相对分子质量Mr共同与其11种理化性质进行关联，其结果显示了满意的线性相关性。

According to the Aufoau build-up principle and the order of filling atomic orbits, the valence electron configuration of ground state atoms of the d-block transition elements seems only to be (n - 1 ) dx-2 us2x here denotes the number of the electron in (n - 1 d and us orbits.

众所周知，元素周期系过渡元素基态原子价电子组态的多样化是已往的原子构造理论无论是从定性还是从定量方面都是迄今难以给出圆满理论解释的原子构造现象之一［1～11］。

The weak base anion exchange resin with covalent bond side chains which contain donator atom N offering unshared electron pairs, is able to form a coordinative covalent bond to heavy metal in which unsaturated vacant orbits exist in its electron shells.

在天然淡水水体的环境下，重金属被树脂吸附源于树脂胺基官能团上的N原子有孤对电子，水中所含重金属的价电子层有空轨道。

Such a structure shows the arrangement of valence shell electrons within the molecule.

这种结构表明了分子内外层价电子的排布。

Experience the application of valence shell electrons pair of repulsion theory.

体会价电子对互斥理论的运用。

Exploring the idea of valence shell electrons pair of repulsion theory.

探究价电子对互斥理论的思想。

Teacher help Students to explore, discover, and summarize the using of valence shell electrons pair of repulsion theory in the shapes of simple molecules.

老师帮助学生探索、发现、总结价电子对互斥理论在简单小分子构型中的运用。

The difference of the characteristics of HHQ monolayer is dependent on the difference of radii,nuclear charges and the structures of valence shell of metal ions.

金属离子的半径、电荷及核外价电子层结构不同是影响HHQLang－muir单分子层膜性能的本质原因。

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.

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。

The ability of carbon to form stable compounds in such astonishing numbers arises in that it utilizes its four valence electrons completely in the establishment of four covalence,its valence shell becomes saturated.

碳原子能够利用其全部四个价电子构成共价键，并形成稳定的饱和价电子层。这就导致碳元素能构成各类数目惊人的稳定化合物。注意本句使用的是&逆序&的翻译方法。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。