Question

Why do metals possess lustre and conduct electric current?

Answer 1

Metals show lustre and conduct electricity because of the presence of mobile electrons in their atomic structure. These electrons are not tightly bound to individual atoms but are free to move throughout the metal. When light strikes the surface of a metal, these free electrons absorb the energy and re-emit it, causing the surface to reflect light and appear shiny or lustrous. Similarly, when an electric field is applied, the free electrons move through the metal, creating an electric current. It is because of these freely moving electrons that metals are able to conduct electricity and reflect light.