Question

what is reactivity searies?how does the reactivity searies of metals help in predicting the relative activities of various metals?

Answer 1

The arrangement of metals in the vertical column in the order of decreasing reactivity is called reactivity series or activity series.

A metal placed above hydrogen in the activity series will displace hydrogen from water or acids.

A metal placed at the top of the activity series would displace metal below it. Thus, a more reactive metal displaces a less reactive metal from its salt solution.

Answer 2

Reactivity series is the arrangement of metals in their increasing to decreasing order.
Reactivity series helps us to know the least or the highly reactive metal.