When reading the electrostatic series, you can look at the position of a metal on the list to determine how reactive it is. For example, sodium (Na) is at the top of the list, which means it is the most reactive metal. Fluorine (F) is at the bottom of the list, which means it is the least reactive. This means that sodium will react more easily with other substances than fluorine.
The electrostatic series can be used to predict the reactivity of metals in different situations. For example, if you want to know which metal will react more easily with water, you can look at the electrostatic series and see that sodium is more reactive than iron. This means that sodium will react more easily with water than iron.
The electrostatic series is also useful for understanding why some metals are used more often than others in certain applications. For example, sodium is not used to make cookware because it is too reactive. It would react with the water in food, causing the food to taste bad. Iron, on the other hand, is less reactive and is therefore used to make cookware.