induced dipole dipole

• uneven distribution of electrons causes temporary dipole in the molecule. forms induced dipole dipole. 2 same molecules e.g. non polar
• • The strength of the Induced dipole-dipole intermolecular force depends on the number of electrons in the molecule.
  • The larger the number of electrons, the stronger the induced dipole dipole intermolecular force.
• boiling point increases with increasing carbon chain lenght:

  • number of electrons increases           
  • stronger induced dipole dipole intermolecular forces
• When the surface area of the molecule decreases, but the number of electrons stays the same, the boiling point decreases.

  • less surface contact
  • weaker induced dipole dipole forces