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.
London dispersion is the weakest interatomic force. It relies on the motion of electrons to form a momentary (temporary) multipole in one atom, and induce a momentary multipol â¦ e on nearby atoms. It is extremely distance sensitive (the energy of the attraction is inversely proportional to the distance between the particles to the sixth power) and is the weakest attractive force in most circumstances.