There will be Induced Dipole Dipole Interactions also called "London Dispersion Forces"between the molecules of Non Polar Compounds . This is caused by Instantaneous Dipoles created in non polar molecule
Suppose take some small Molecule ( Non polar ) or at least a He Atom ..at a particular instant The electrons of the atom for ex.are left side .. i mean the electrons revolve round the nucleus and suppose they are at left side of atom at some particular
instant. Then There will be Very small Negative Charge Developed on the left side and Very Small Positive charge on right side .. Now Consider this Atom goes near another atom ..The first atom we took ie, the charged atom(partially) induces the dipole creating Dipoles on its near by atoms or(molecules ) See the resource down for diagrammatic : )
This can be understood by ...ex you take H-Cl which is Polarized ...+ ...-
H ----Cl
: ..- :.. +
C ======C
when brought near ethene(almost Non Polar) is polarized like the above : )
Resource :
http://www.chem.purdue.edu/gchelp/liquids/inddip.htmlBut guys i dont understand one thing why cant this Nonpolar substances Dissolve in Polar Solvents ? There could be some Attraction bettwen Polar charges of Polar molecule and This Instantenous dipoles of this Non Polar Molecule .. so why its not possible ?
Thanks in Advance : )