Forces of attraction which may be present between all kinds of atoms and molecules are _____________________?
Correct answer: C. van der Waal
- A. intramolecular
- B. intermolecular
- C. van der Waal
- D. Dipole-induced dipole
Explanation
Van der Waals forces are weak intermolecular attractions that can occur between all atoms and molecules, including non-polar species. Students may choose intermolecular forces, option b, because van der Waals forces are a type of intermolecular force, but the question is asking for the more specific term used for these universal weak attractions.
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About Properties of Liquids
Liquid behavior depends on intermolecular forces, which produce surface tension, viscosity, capillary action and a definite volume without a fixed shape. The topic also covers vapor pressure, evaporation, boiling point and the effect of temperature and external pressure, while distinguishing evaporation at the surface from boiling throughout the liquid.
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