V2EX induced dipole

Induced Dipole

定义 Definition

Induced dipole 指“诱导偶极(矩)”:原本没有永久偶极的原子或分子,在外加电场邻近带电粒子/极性分子的影响下,电子云发生轻微位移,从而产生的暂时性电荷分离与偶极矩。它常见于分子间作用力(如伦敦色散力、诱导力)与极化现象中。

发音 Pronunciation (IPA)

/ndjust dapol/(美式常见)
/ndjust dpl/(英式常见)

例句 Examples

A strong electric field can create an induced dipole in a neutral atom.
强电场可以在中性原子中产生诱导偶极。

When a polar molecule approaches argon, it may induce a dipole, increasing the attraction between them.
当一个极性分子靠近氩原子时,可能会诱导出偶极,从而增强它们之间的吸引力。

词源 Etymology

induced 来自拉丁语词根 ducere(“引导、带领”),含义是“被引起的、被诱导产生的”;dipoledi-(“二”)+ pole(“极”)构成,字面是“”。合在一起,直观表达“由外界作用引起的两极分离”。

相关词 Related Words

文学与经典著作中的出现 Notable Works

  • Atkins’ Physical Chemistry(《阿特金斯物理化学》):在分子间作用力、极化与介电性质等章节讨论诱导偶极与相关能量项。
  • Molecular Quantum Mechanics(Atkins & Friedman):在分子电荷分布、极化率与相互作用的语境中涉及 induced dipole 概念。
  • Introduction to Quantum Mechanics(David J. Griffiths):在原子/分子的电极化与外场响应相关内容中常会出现该术语或同类表述。
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