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 Forces (induced dipole â dipole bonding) Theory: 1. Short lived time dependant dipoles are being created in atoms (and. molecules) continually as electrons move around their respective. orbital(s). Recall that a dipole is a special separation of charge. Since all. atoms and molecules contain electrons, they all do this. 2. At close to the condensation point (gas - liquid), the atoms or molecules. are moving slowly enough for an induced dipole to form between. adjacent atoms or molecules.