Why does dispersion happen?

Answer 1

Dispersion forces are forces that are due to certain distortions in the electron density around atoms or moleculed. They can be mainly categorized in to :

1.Induced dipole-induced dipole forces

2.Dipole dipole force

3.Induced dipole-dipole forces

4.London force

Dipole forces are forces between molecules that have permanent dipole character like NaCl.However, in cases like certain molecules that do not have dipole character, there may be instantaneous distotions which leads to london forces.Dipoles can induce dipole character by thickening densities of electrons around certain atoms, leading to induced dipole interactions.

Answer 2

See the Related Links for "Purdue.edu: Dispersion forces" to the bottom for the answer.

Answer 3

because it can