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Which intermolecular force acts between two non-polar molecules?
AIon-dipole forces
BInduced dipole forces
CDipole-dipole forces
DIon-induced forces
Answer & Solution
Correct answer: B. Induced dipole forces
1. A non-polar molecule has its charge spread evenly and carries no permanent dipole.
2. At any instant the moving electrons can still sit unevenly, giving a temporary dipole.
3. Induced dipole forces exist between two non-polar molecules for exactly this reason.
4. Ion-dipole forces need an ion and a polar molecule, so neither partner here would qualify.
_Source: Siyavula Physical Sciences Grade 11 (Everything Science, CC BY 4.0), Chapter 4: Intermolecular forces_
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