Here's why:

* Electrons: Silver has a large number of free electrons that can easily move throughout the material. These free electrons are what carry electrical current.

* Resistivity: Silver has a very low electrical resistivity, meaning it offers very little resistance to the flow of electricity.

* Uses: Silver is often used in electrical applications because of its excellent conductivity, such as in electrical contacts, wiring, and circuit boards.

In contrast, insulators have very few free electrons and offer high resistance to the flow of electricity. Examples of insulators include rubber, glass, and plastic.