How does the metal reactivity series work?

The metal reactivity series works by arranging metals in order of their chemical reactivity, from the most reactive metals at the top to the least reactive metals at the bottom. It helps predict how easily a metal loses electrons and takes part in chemical reactions.

Highly reactive metals such as potassium, sodium, and calcium are placed at the top because they lose electrons easily and react strongly with substances like water and acids. Less reactive metals such as silver, gold, and platinum are placed near the bottom because they show very low chemical activity.

The reactivity series helps determine whether one metal can replace another metal in a displacement reaction. A more reactive metal can displace a less reactive metal from its compound. It is also useful for understanding extraction methods of metals, corrosion, and chemical behaviour of elements.