Question

What is Reactivity Series??? Name the most reactive metal and least reactive metal... :) :)

Answer 1

The series of metals which tell us that how much reactive a metal is that means it shows how fast a metal will react.Potassium is highly reactive and gold is least reactive.

Answer 2

The arrangement of the metals in order of their reactivity (i.e. most reactive at the top and least reactive at the bottom) is called reactivity or activity series.
Potassium is at the top so it is most reactive and platinum is at the bottom with the least reactivity .