Answer: Option (b) is the correct answer.
Explanation:
Metals are the substances that have more number of electrons as compared to non-metals.
It is due to the presence of mobile electrons due to which metals have shiny surface because when light falls on a metal then energy from the light is absorbed by the free electrons.
As a result, the electrons move to higher energy level and when excess of energy is released by them in the form of visible light then surface of metal appears shining.
Also, flow of mobile electrons helps in the flow of electric current which makes metals a good conductor in nature.
Thus, we can conclude that the statement, behaviors of the electrons help cause both the shininess and the conductivity of metals, best explains the different properties of metals.
