取向力

极性分子相互靠近时,因分子的固有偶极之间同极相斥异极相吸,使分子在空间按一定取向排列,使体系处于更稳定状态。这种固有的偶极间的作用力称为取向力,又称作偶极-偶极作用力(Dipole-dipole interactions)。其实质是静电力

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