IMFS

kinetic molecular theory

volume of gas is negligible
ignore all attractive/repulsive forces
collisions are random and elastic (100% energy transfer)
KE is proportional to temp in K

IntraMF

attractive forces within molecules; bonds

InterMFs

attractive forces between molecules

Ion dipole forces

strong attraction between ion and a polar molecule
strongest IMF

dipole - dipole forces

two polar molecules attracted to each other
medium strength

dipole induced dipole

polar molecule pushes e- in a nonpolar creating a dipole
pretty weak

(london) dispersion forces

chance that electrons in an atom become unevenly distributed
this creates a dipole moment giving a side of an atom a partial - charge
this is attracted to the nucleus of another atom. can induce a dipole.

the larger the atom the higher the chance for dispersion to occur
dispersion is in everything
polarizabiltiy - follows the same trend as atomic radius
only IMF that affects non-polar and noble gasses

Hydrogen bonding

very strong dipole-dipole fore between an H atom and a very polar Bond
only occurs with H’s bonded to N, O, F
These bonds have high EN and the atoms are small so they can get closer together