Materials with a lot of electron mobility are called conductors.
A good conductor of electricity is one that permits electrons to freely flow through it.
Electrons are electrically charged particles that can be found in a variety of substances.
An electric voltage is applied to the electrons at specific locations, causing them to migrate and allowing electricity to pass through.
The ability of a material to conduct electricity is referred to as conductivity.
Properties of a good conductor:
It has very low resistance.
In general, a good conductor of electricity is also a good conductor of heat.
In general, a good conductor is malleable and ductile.
Therefore, electricity must be able to flow through metal to make it a good conductor. The more free electrons in a metal, the better its conductivity.