V2EX molecular orbital

Molecular Orbital

释义 Definition

分子轨道:在分子中,电子不再只“属于”某一个原子,而是以波函数形式分布在整个分子或其部分区域中的轨道。它常用于解释化学键的形成、键级、磁性与分子稳定性等。(该术语在不同语境下也可涉及成键轨道、反键轨道与非键轨道等分类。)

发音 Pronunciation (IPA)

/mlkjlr rbtl/

例句 Examples

A molecular orbital can extend over more than one atom.
分子轨道可以延伸到多个原子之上。

According to molecular orbital theory, combining atomic orbitals can produce bonding and antibonding molecular orbitals, which helps explain why some molecules are stable while others are not.
按照分子轨道理论,原子轨道组合会形成成键与反键分子轨道,这有助于解释为什么有些分子稳定而有些不稳定。

词源 Etymology

molecular 来自 molecule(分子),而 molecule 源于新拉丁语 molecula,意为“小质量/小块”(由拉丁语 moles “质量、块”引申)。orbital 来自 orbit(轨道),与“围绕运行的路”有关;在物理化学中引申为“电子可能出现的空间分布(轨道)”。合起来 molecular orbital 就是“分子尺度上的电子轨道/分布区域”。

相关词 Related Words

文学与著作 Literary Works

  • The Nature of the Chemical Bond Linus Pauling(讨论化学键理论与相关轨道观点)
  • Physical Chemistry Peter Atkins & Julio de Paula(物理化学教材中系统使用“molecular orbital”解释键合与光谱)
  • Modern Quantum Chemistry: Introduction to Advanced Electronic Structure Theory Attila Szabo & Neil S. Ostlund(电子结构理论中高频出现该术语)
  • Quantum Chemistry Ira N. Levine(量子化学教材中用分子轨道理论讲解分子结构与能级)
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