Compare the properties of metals and non-metals with respect to (i) malleability (ii) ductility, and (iii) electrical conductivity.

(i) Metals are malleable i.e. they have ability to be flattened into thin sheets by hammering or rolling such as aluminum whereas non-metals are non-malleable.

(ii) Metals are ductile stretched into wires such as copper whereas non-metals are non-ductile.

(iii)Metals are good conductors of heat & electricity. Exception: Lead & mercury are poor conductors of heat. Non-metals are poor conductors of heat and electricity. Exception: Graphite conducts electricity.