CHEM 001B Lecture Notes - Lecture 9: Intermolecular Force, Chemical Polarity, Boiling Point

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9 Feb 2018
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The combination of attractive and repulsive electrical forces between pairs of. The forces that act between molecules and between molecules and ions are electrons within a molecule are intramolecular forces intermolecular forces. Intermolecular forces have considerable influence on the physical. Boiling points and atomic number properties of all substances. The boiling point increases as the atomic number increases. Separating liquid-phase particles that are attracted to each other requires energy, and the stronger the particles" attractions for each other, the greater the amount of energy needed to separate them. The greater the energy required to separate these particles, the higher the boiling points. Intermolecular force between nonpolar molecules caused by the presence of temporary dipoles in the molecules. Separation of charge produced in an atom or molecule by a momentary uneven distribution of electrons. Relative ease with which the electron cloud in a molecule, ion, or atom can be distorted, inducing a temporary dipole. Larger atoms/molecules are more polarizable than smaller.