College Chemistry : Intermolecular and Intramolecular Forces
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Example Question #11 : Intermolecular And Intramolecular Forces
A collection of 
Dipole-dipole interaction
Ion-ion interaction
Dispersion/van der Waals forces
Hydrogen bonding
Dipole-dipole interaction
Example Question #12 : Intermolecular And Intramolecular Forces
The compound hydrazine is given by the molecular formula 
Dispersion/van der Waals forces
Hydrogen bonding
Ion-ion interaction
Dipole-dipole interaction
Hydrogen bonding
Hydrazine is a polar compound that possesses the requirements for hydrogen bonding: an "acidic hydrogen" (a hydrogen bonded to a highly electronegative atom such as oxygen, nitrogen or fluorine) and the presence of a lone pair. Both Nitrogen atoms in hydrazine have lone (unshared) electron pairs, and all four hydrogen atoms are "acidic," making hydrazine a candidate for intermolecular hydrogen bonding.
Example Question #21 : Molecules And Compounds
List the following three molecules in order from lowest melting point to highest melting point:
Melting point is inversely related to the strength of intermolecular forces between molecules. In other words, the higher the attractive forces between molecules, the harder they will be to pull apart from a solid into a liquid state during melting. Thus, nonpolar compounds experiencing relatively weak intermolecular forces (dispersion/van der Waals forces) tend to have lower melting points than polar compounds experiencing dipole-dipole or hydrogen bonding interactions, and lower still than ionic compounds with strong attractions between positive and negative ionic species. Thus, in this list, the nonpolar compound 
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