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How are you able to identify dispersion forces? The difference in electronegativity, when it is small, it is a covalent bond. Is there a relationship between electronegativity and dispersion forces?
Dispersion forces are intermolecular forces that act between nonpolar molecules if they can be polarized and exhibit temporary and induced dipole moments. Electronegativity mostly comes into play intramolecularly, between the atoms of a molecule not between molecules.
Dispersion forces are found in all molecules whether it is ionic or covalent and are considered as the weakest type of intermolecular force. Electronegativity on the other hand is solely based on one molecule and how it attracts its atoms.
Dispersion forces somewhat rely on electronegativity. The way I think of it is that every molecule has a slight positive and slight negative charges at some place, and these slight opposite charges on different molecules leads to slight attraction, namely dispersion forces.
Electronegativity determines the intramolecular forces (the forces that hold atoms in place). Electronegativity will determine whether the molecule is polar or non-polar, in other words, the chemical bond. The intramolecular forces affect the nature of the INTERmolecular forces (forces that hold molecules in a substance. Such intermolecular forces range from van der waals, hydrogen bonding, dipole-dipole, etc...
Dispersion forces are forces between molecules; they hold the two molecules together. They are classified as intermolecular forces. Electronegativity is how often an atom attracts a shared pair of electrons, which connects two atoms together. Electronegativity determines intramolecular forces. Intermolecular forces are affected by intramolecular forces.
These explanations are really helpful. Thanks everyone.
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