The answer is (in
order from strongest to weakest);
covalent
ionic
ion-dipole
H-bonding
dipole-dipole
van der Waals
A covalent bond is
hardest to break because it involves sharing of electrons by atoms while Van der
Waals is weakest because they involve electrostatic
attraction due to differentially induced
dipoles between atoms and its strength is dependent
on their distance apart.
