ionic |
ions |
ionic |
hard, brittle, conducts electricity as a liquid but not as a solid, high to very high melting points |
|
metallic |
atoms of electropositive elements |
metallic |
shiny, malleable, ductile, conducts heat and electricity well, variable hardness and melting points |
|
covalent network |
atoms of electronegative elements |
covalent |
very hard, not conductive, very high melting points |
|
molecular |
molecules (or atoms) |
IMFs |
variable hardness, variable brittleness, not conductive, low melting points |
|