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Question
atb february 6, 2026
the correct order for intermolecular forces from strongest to weakest is
ionic bonding > intramolecular forces > hydrogen bonding
london dispersion > hydrogen bonding > dipole - dipole forces
hydrogen bonding > dipole - dipole forces > london dispersion
dipole - dipole forces > london dispersion > hydrogen bonding
首先回忆分子间作用力(intermolecular forces)的强度顺序:氢键(hydrogen bonding)的强度大于 dipole - dipole forces(极性分子间的取向力、诱导力等),而 dipole - dipole forces 又大于 London dispersion forces(色散力,非极性分子间的主要分子间力,也是所有分子都存在的最弱的分子间力)。然后分析每个选项:
- 选项1:ionic bonding(离子键)属于分子内或离子晶体中的化学键,intramolecular forces(分子内作用力,如化学键)和分子间作用力是不同范畴,且该顺序错误。
- 选项2:London dispersion 是最弱的,该选项顺序完全错误。
- 选项3:hydrogen bonding(氢键)强度大于 dipole - dipole forces,dipole - dipole forces 大于 London dispersion,顺序正确。
- 选项4:hydrogen bonding 强度大于 dipole - dipole 和 London dispersion,该选项顺序错误。
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C. hydrogen bonding > dipole - dipole forces > London dispersion