Question

Metals have a typical shine called as___________. 6th Science ​

Answer 1

Explanation:

Materials that have a shiny appearance are said to have 'lustre'. Metals such as gold, silver, copper and aluminium are among materials that have this quality

Answer 2

Metals have a typical shine called as lustre.

Explanation:

Lustre:

• A lustre is a property that describes how light is reflected on the surface of a mineral.  

• This is one of the characteristics that mineralogists look for when trying to determine the identity of a mineral.

Metals are lustrous in nature, having a shiny appearance.

The reason is as follows,

• The positive metal ions are surrounded by a pool of electrons.

• The electrostatic forces of attraction between metal ions and mobile

        electrons are called a metallic bond.

• When light falls on the crystal, electrons get excited.

• Emission of radiation or light energy by excited electrons makes a metal shiny in appearance.