In order from highest to lowest, the best conductors of electricity are?

The best conductors of electricity are distinguished based on their ability to allow electric current to flow with minimal resistance. Silver is the best conductor due to its atomic structure, which facilitates the free movement of electrons. This characteristic allows silver to transfer electrical energy more efficiently than other metals.

Copper follows silver closely as a conductor. While not as conductive as silver, copper is widely used in electrical wiring because it offers an excellent balance of conductivity, availability, and cost-effectiveness. It also has the advantage of being more resistant to corrosion than silver, which makes it preferable for many practical applications.

Aluminum, although a decent conductor, has a lower conductivity compared to both silver and copper. Its use as a conductor is often due to its lightweight properties and lower cost, but it cannot match the conductivity performance of the other two metals.

Thus, when ranked from highest to lowest conductivity, silver occupies the top spot, followed by copper, and then aluminum, justifying the choice of silver, copper, and aluminum wire as the correct order.