查询词典 valence electron

Knowledge and skills: understand the core idea of valence shell electron pairs repulsion theory; can use the theory to determine the shapes of some simple molecules.

知识与技能：理解价电子对互斥理论，能在理论的指导下确定一些小分子的形状。

Process and Methods: require students to built models by themselves; use and understand the valence shell electron pairs repulsion theory when building models; cultivate students to analyze issues and problem-solving abilities.

过程与方法：要求学生自己建立分子形状的模型，在建立模型的时候理解和运用价电子对互斥理论，培养学生的分析问题能力和解决问题的能力。

The association defect formed by donor and acceptor was the obstacle of the electromigration of the Oxygen vacancy and the electron. The valence variation of MnO〓 during the sintering and reoxidation process can improve the insulation resistance effectively.

要发挥MgO受主掺杂的作用，同时要避免氧空位的增加。Y〓和Dy〓作为两性离子掺杂，减少了氧空位，产生的施主和受主相互缔合，成为氧空位和电子迁移的障碍。

It was found that the DAPS shift of La was associated with 4f energy change under the influence of 3d hole-4f electron interaction, and with the change of polarization energy, while the change in DAPS line shape of Ce reflected its valence fluctuation.

并发现La的DAPS峰位的移动主要和3d空穴-4f电子互作用下的4f能级变化有关，另外还和极化能的变化有关。而Ce的DAPS峰形的变化可以反映Ce特有的化合价涨落现象。这一工作深化了对稀土DAPS的认识，有利于APS在以后的稀土研究中的应用。

VARIATION IN L, M, N INNER-SHELL ELECTRON BINDING ENERGIES OF RARE-EARTH ELEMENTS IN VALENCE TRANSITION

变价稀土元素L，M，N内壳层电子束缚能量的变化

Optical absorptions for a semiconductor or insulator arise through electron transfers from the valence band to the conduction band.

光学吸收为半导体或绝缘体出现通过电子转移从价带至导带。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。