ionic bonds are considered "strong" bonds in that they hold molecules like
NaCl together out of water. Hydrogen and vanderWaals are considered weak.
Water is very odd stuff with the oxygen holding onto the electrons most of
the time ... oxygen doesnt like to share. The hydrogens then become
positively charged. Water actually causes the dissociation of NaCl, altho
the amount of ionically bound compounds differ in how much will dissociate
and how well, or some not at all. It is only by association of the negative
with Hydrogen and the positive ion with oxygen does the stuff dissociate at
all. drop NaCl into oil and it goes to the bottom.

nothing is as strong as covalent bonds, which are, after all the glue that
holds us together and the storage batteries for energy. Ingrid