What are the metals typically found in the middle of the activity series?

Metals found in the middle of the activity series exhibit moderate reactivity and are often more stable in their elemental form. Common examples include zinc (Zn), iron (Fe), and copper (Cu). These metals display characteristics of both reactive and less reactive metals. They can displace ions of metals below them in the series but are not easily displaced by those above. This makes them useful in various applications, including corrosion-resistant alloys (e.g., stainless steel with iron and chromium) and sacrificial anodes (e.g., zinc anodes to protect iron structures). Their intermediate reactivity is advantageous in balancing functionality and durability in diverse industrial contexts.