with dipole dipole its where a molecule say for instance H20, the oxygen in the molecule is highly electronegetive - ie it wants electrons pronto!
and since it has such an attraction for electrons in the covalent bondings between intramolecular bonded hydrogen and oxygen, the electrons spend a larger amount of time orbiting the oxygen ion,
THus that side of the water molecule is more negetive and hte hydrogen more positive. Thus hydrogen bonding occurs due to this "induced" disparity of charge, [hydrogen bonding is a stronger form of dipoledipole, so using a hypoerbolic example can illustrate it a bit better i reckon]
BTW .. hydrogen bonding is a type of dipole dipole rite?
well hydrogen bonding happens with Nitrogen, Oxygen or Fluorine and 10 times stronger than dipoledipole but its still counted as a dipoledipole interaction
