Force of attraction between nonpolar molecules?

Answer 1

Two non polar molecules will be attracted to each other by dispersion forces (van der Waal forces).

Answer 2

In regards to a non-polar molecule's attraction force, you could think of electronegativity, or the tendency for atoms to draw electrons toward themselves. Electronegativity generally increases as you go from the left to right and from down to up the Periodic Table. Nonmetals are more electronegative than metals, and also have a higher ionization energy. Then there are London dispersion forces. Dispersion forces are weak temporary forces that can occur between non-polar or polar molecules. Basically, the flow of electrons about the nucleus of an atom can be random (although it is mostly predictable). So, like cars speeding around a race track (where they clump together on one side at times, then spread out, and move pretty randomly), when electrons collect on one side of a molecule temporarily, this will cause the molecule to develop a temporary and weak polarity for a very brief period of time, where one side of the molecule with be slightly negative and the other side will be slightly positive.

Answer 3

Van der Waals force
London Dispersion forces

Answer 4

These forces are called London Dispersion forces or instantaneous dipole-dipole interactions.

Answer 5

London Force

Answer 6

These ar Van der Waals forces.