Which of the following physical property is not shown by metals?
Dullness
Out of the given physical properties, the one that is not shown by metals is dullness.
Metals have a shiny surface and this property of metals is called metallic lustre. Other than this metals are good conductors of electricity (electrical conductivity), they can be drawn into wires (ductility) and they produce sound when hit with a hard material (sonority).