what kind of intermolec forces are in NH4Cl
i thought it was london dispersion, dipole dipole, and hydrogen bonding
and nottttt ionic.
what am i doing wrong?
The bond between NH4+ and Cl- is ionic.
That is the bond that breaks in solution, when the compound forms two ions.
The bonds between N and H are probably covalent, and do not break easily.
DrWLS is correct. While you have H-N bonds, per se, they are not, by definition, hydrogen bonds. You do have attraction between the NH4^+ and the Cl^- ions in solution. The NH4^+ is not a dipole and it has no dipole moment although each of the N-H bonds are polar. That isn't a contradiction because to have a net dipole moment the ion/molecule must have polar bonds (which NH4^+ has) AND not be symmetrical (in space that is). The NH4^+ is symmetrical so each of the N-H bond's polarity cancels and there is no NET dipole for the ion.
"Hydrogen bonds, as I understand them, are weak attractive forces between hydrogen atomsin adjacent molecules of a liquid." Not between hydrogen atoms, but between a hydrogen atom and an electronegative atom such as O, N or F.
see http://en.wikipedia.org/wiki/Hydrogen_bond
so you mean H-N is not a hydrogen bond?
and it is an ionic
so the list would be
Dispersion
H bond
dipole dipole?