Question

Dispersion Forces or London Forces arises between

• A. Polar Molecule
• B. Non polar molecules
• C. Polar and Non polar molecule
• D. None of these

Answer 1

The correct option is B Non polar molecules

These are the interparticle forces among the monoatornic or non-polar molecules such as $N_2,He,H_2,C{O}_2$ ,etc. Atoms and other non-polar molecules are electrically symmetrical and have no dipole moment because their electronic charge cloud is symmetrically distributed. However, an instantaneous dipole may develop in such atoms and molecules.
Hence option B is correct.