Question

plz help............... a)

Answer 1

(a) REACTIVITY SERIES

(a) Reactivity series is a type of series of metals in
which they are placed in a manner (increasing or decreasing) according to their Reactivity

Answer 2

In chemistry, a reactivity series (or activity series) is an empirical, calculated, and structurally analytical progression of a series of metals, arranged by their "reactivity" from highest to lowest. It is used to summarize information about the reactions of metals with acids and water, double displacement reactions and the extraction of metals from their ores.