[CamiGurlRox]

Hello all.   Just looking for some help with AP Chemistry.  I'm having problems with intermolecular forces.

I have a worksheet I'm doing and we're to indicate the strongest IMF holding together the crystals for the chemical formula.

For example:  NH3 would be Hydrogen bonds...I think. 

On the worksheet, an entire list of compounds is presented and we have to choose the strongest IMF between London forces, Dipole-dipole attractions, hydrogen bonds, ionic bonds, and covalent bonds.

Maybe I'm doing this wrong...?  How do I determine the type simply off of formulas?

[Schrödinger]

See http://en.wikipedia.org/wiki/Intermolecular_force

Take a look at the table at the end of the page.