On the other hand, platinum is the least reactive element on the list and is less likely to lose electrons and be oxidized. This means that potassium is the most reactive element on the list and is more likely to lose electrons and be oxidized. Potassium > Sodium > Calcium > Magnesium > Aluminum > Zinc > Iron > Nickel > Tin > Lead > Hydrogen > Copper > Silver > Gold > Platinum The most reactive elements are at the top of the activity series, while the least reactive elements are at the bottom.įor example, the activity series for some common elements is: The activity series is based on the observation that some elements are more likely to lose electrons and be oxidized (become positive ions) while others are more likely to gain electrons and be reduced (become negative ions). It is used to predict the products of single displacement reactions and to help identify the oxidizing agent and reducing agent in a redox reaction. The activity series is a list of elements in order of their relative reactivity.
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