Ionic compounds are hard
crystalline solids with flat sides and regular shapes because the ions are arranged
in straight rows in strong ionic bonds.
Ionic compounds have very
high melting points and boiling points.
The strong forces holding
ionic compounds prevent them to evaporate easily. Hence, ionic compounds have
no smell.
Solid ionic compounds don’t
conduct electricity but they do when they are aqueous or molten. This is
because in liquid/aqueous state the ions which conduct electricity are free to
move. In solids, these ions are fixed in place.
Ionic compounds are soluble
in water but insoluble in organic compounds. This is because the ions attract water
molecules which disrupt the crystal structure, causing them separate & go
into solution. Vice versa is when in organic solvent.