The reactivity series is a list of metals arranged in order of their reactivity, with the most reactive metals at the top and the least reactive at the bottom. Here's a simplified version:
Most Reactive
* Potassium (K)
* Sodium (Na)
* Calcium (Ca)
* Magnesium (Mg)
* Aluminium (Al)
* Zinc (Zn)
* Iron (Fe)
* Lead (Pb)
* Copper (Cu)
* Mercury (Hg)
* Silver (Ag)
* Gold (Au)
* Platinum (Pt)
Least Reactive
The middle of the series would contain metals that are moderately reactive. This is a bit subjective, as the "middle" can shift depending on how you group the elements.
If you're asking about a specific element, please let me know and I can tell you its position on the reactivity series.
