HOW ACTIVITY SERIES OF METAL WOULD HELP TO PREDICT WHETHER OR NOT A SINGLE DISPLACEMENT REACTION WILL OCCUR?

Answer 1

Why are you cluttering up the place with the same question?

Answer 2

Basically the activity series tells you which elements are more reactive in solution, and therefore can dictate whether or not a displacement will occur. So...for example, you know that things naturally come without a charge, such as zinc metal and copper metal. If you stuck the zinc metal (with no charge) in some copper sulfate solution (in which the copper has the +2 charge), the Zinc would DISPLACE the copper, resulting in copper metal (with no charge) and zinc sulfate solution (zinc with the +2). BUT, if you stuck the copper metal(with no charge) into zinc sulfate(where zinc is +2) solution, nothing would happen because copper is lower on the chart and can't displace zinc.