Dispersion forces, other known as London forces are the result of intermolecular forces between adjacent molecules. These forces grow in proportion to the lengths of the non polar portions of the molecules due to the increased surface area of interaction. To visualize this property macroscopically, envision two magnets of equal strength but different sizes; the magnet that has a larger surface area of interaction will stick greater than a smaller magnet due to the greater surface size and proportion of attraction
If you are asking about bonds of attraction between separate molecules, there are two kinds: dipole-dipole attraction and London dispersion force attraction. Dipole-dipole attraction is the stronger of the two, because the molecules in this case are polar, meaning that electrons are more often clustered at certain spots on the molecule and rarified at the opposite end, resulting in a greater charge on both ends (London dispersion forces are the weak forces of attraction between nonpolar molecules during random, fleeting moments of polarization). These forces are not to be confused with ionic attraction (which is attraction between ions, not molecules) and covalent bonds (which are the forces holding the individual atoms in a molecule together), both of which are stronger than any intermolecular force of attraction (with covalent bonding being the strongest of all bonds at the chemical as opposed to the nuclear level). Keep in mind, though, that the exact strength of attraction varies depending on the electronegativities of the different atoms in the molecule (but the weakest polar molecular bonds are, by definition, stronger than the strongest nonpolar molecular bonds).
That is dispersion force.
Solids are held together but different types of intermolecular forces. The nature of these forces depends on the compound. In nonpolar substances, only dispersion forces at work. In polar compounds, dipole-dipole forces also hold the molecules together. Since dipole-dipole forces are stronger than dispersion forces, polar compounds usually have a higher melting point than nonpolar ones.
Atoms held together in molecules are done so by intramolecular forces, which include ionic, covalent, and metallic. These depend upon the electroegativty of the specific atoms being bonded and how many bonds they have. You might mean intERmolecular forces, which bind multiple molecules in solution. I listed them below in order of descending strength: Ion-ion, hydrogen bonds, dipole-dipole, London dispersion forces.
Octane is a straight chain molecule with a large surface area and stacks easily with other octane molecules. This increases the strength of the London dispersion forces that keep the octane molecules attracted to each other. The London dispersion forces on octane are greater than for smaller straight chain molecules because octane is both heavier and has more electrons that make it more polarizable.
The only intermolecular forces in this long hydrocarbon will be dispersion forces.
London dispersion forces
Dipole-Dipole and covalent sigma bond forces.
London dispersion forces
Hydrogen bonding and London Dispersion forces (the latter of which are in all molecules).
The forces acting on butane are London dispersion forces and dipole-dipole interactions. London dispersion forces are temporary attractive forces between nonpolar molecules, while dipole-dipole interactions occur between polar molecules due to the attraction of partial charges.
Dipole-Dipole as SO" is a bent molecule with a dipole momennt (1.62D) due to the electronegativity dfference between S and O. There will also be weaker London dispersion forces due to instantaneous dipoles.
London forces
Yes, CH3CH2CH3 (propane) can experience London dispersion forces. London dispersion forces are weak intermolecular attractive forces that all molecules exhibit due to temporary shifts in electron distribution, resulting in temporary dipoles.
Yes, CH3NH2, also known as methylamine, can exhibit London dispersion forces. London dispersion forces are present in all molecules to some extent, as they are caused by temporary fluctuations in electron density that induce weak attraction between molecules.
Van der Waals forces are a broader term that includes London dispersion forces as a subset. London dispersion forces are the weakest type of van der Waals forces and are caused by temporary fluctuations in electron distribution. Van der Waals forces also include dipole-dipole interactions and hydrogen bonding, which are stronger than London dispersion forces.
London dispersion vander walls force