London Dispersion Force: The weakest intermolecular force which is a temporary attraction that happens when the electrons of 2 adjacent atoms form temporary dipoles due to the movement of electrons around the 2 atoms. This force is present in both Polar and Non-Polar molecules.
Dipole Dipole: An attraction between the postive dipole of one atom with the negative dipole of the other atom. In other words, the dipoles are attracted like the negative side of a magnet is attracted to the positive side of another magnet. Unlike London Dispersion Forces, this type of attraction is only present in Polar molecules.
Hydrogen Bond: A special type of Dipole Dipole where temporary covalent bonds are established between a Hydrogen atom of one molecule and a Fluorine, Oxygen, or Nitrogen atom of the other same molecule.
The Forces Acting on Acetone
The forces that are acting on Acetone are all three; London Dispersion Forces, Dipole Dipole, and Hydrogen Bonding. London Dispersion Forces are acting on this molecule because they act on every molecule, Dipole Dipole is acting on this molecule because the molecule is Polar and finally Hydrogen Bonding is acting on the molecule because a Hydrogen atom of one molecule can bond with the Oxygen atom of the second molecule. This is shown below:
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