1 Raised over Fort McHenry on the morning of September 14, 1814, to signal American victory over the British in the Battle of Baltimore; the sight inspired Francis Scott Key to write The Star-Spangled Banner. 2  Preserved by the Armistead family as a memento of the battle.
London dispersion forces are a type of intermolecular force. They are relatively weak. They are also called induce-dipole induce-dipole interactions. 1  Present in non-polar molecules.  Due to non-systematic electron distribution where one molecule induces a dipole on another molecule.
Best Answer: Intermolecular forces are forces that act between large bodies of molecules. There are basically a few types, with the most familiar probably being the London Dispersion forces (van der waals force), dipole-dipole interactions (polar attractions) and hydrogen bonding (aka hydrogen bonding). London Dispersion exists in EVERY molecule. So write that down. Hydrogen bonding occurs when there's a hydrogen within the molecule attached to an atom with extremely high electronegativity such as Oxygen, Fluorine, and Nitrogen. Dipole-dipole exists in polar molecules.