1. Intermolecular Forces (IMF)
Dipole/dipole
Hydrogen
London

2. INTRAmolecular vs. INTERmolecular
INTRA molecular bonds are like the main type of bonding. (Ionic or Covalent)
INTERmolecular bonding exist between molecules
INTER is a lot WEAKER than INTRA!!

3. What are they?
Forces that exist between molecules!!

4. They exist in… Mainly solids and liquids
Do not exist in gases b/c their molecules are too far apart … so no attractive forces is needed!

5. Dipole/Dipole
Forces of attraction that exist between POLAR molecules!!
Have higher m.p./b.p. than nonpolar molecules!
Polarity depends on the orientation of the molecule (lewis structure)!!

6. HYDROGEN BONDS Strongest type of IMF
Occurs only b/w H and a small, highly electronegative atom such as N, O, or F
Has the highest mp/bp of all 3!!

7. LONDON (dispersion)Forces
Occurs mainly in NONPOLAR molecules!
It is the WEAKEST force of all 3!
Has the lowest mp/bp of all 3!!
Forms temporary, instantaneous dipoles!