permanent dipole

• when does a polar bond form?


  if the two atoms that are bonded have different electronegativities
• what does the more electronegative atom do?

  draws more of the negative charge towards itself and away from the other atom - produces a d- region and a d+ region - permanent dipole
• what can polar molecules with a permanent dipole align to form?

  a lattice of molecules similar to an ionic lattice