valence number

The density of state of valence electron of La and O ions increase during activation processes. The 6s higher energy valence electrons of La ions with unsaturated coordination number is easy to emit. It is clear that the processes is beneficial to thermionic emission.

激活过程促使La，O离子的价电子态密度增加，配位不饱和的La离子外层6s高能价电子易形成电子发射，即这一变化过程对热电子发射具有积极作用。

PROFESSOR: five& there's five valence electrons, but the atomic number is actually seven.

教授：5，有5个价电子，但原子序数是7。

Using X-ray absorption fine structure ( XAFS), the author analysed the valence and coordination number changes of Ni atoms in the process of lithium-ion inserting, inferring the possible process of lithium-ion reducing transition metal oxides.

采用X-射线吸收精细结构（XAFS）分析在锂离子嵌入过程中Ni原子的化合价和配位数的变化，推测金属锂还原过渡金属氧化物的过程。

Study on QSPR of the Average Valence Number and Average Principle Quantum Number

平均价电子数和平均主量子数的定义及其QSPR研究

Regression analysis and test of significance showed that it can well interpret the relationship between substituent and~ ( 13) C NMR based on the number of valence electrons and mulliken charge, and interpret the contribution of conjugated effect.

回归分析及显著性检验表明，根据原子的价电子数和电荷，能够很好地解释化学位移与取代基之间的变化规律，且能够较好地考虑共轭效应的影响。

The Multiple Centre d-p π Bond and the Configuration of Molybdenum Cluster Compounds in Higher Oxidation States(ⅱ) The Rule of Cluster Valence Electron Number and Distortion of the Configuration

多中心d-pπ键与高氧化态钼簇合物的几何构型&（Ⅱ）簇价电子数规则与构型畸变