The reactivity series , Corrosion
The reactivity series :-- The reactivity series is a list of metals arranged in the order of their decreasing activities. The reactivity series is also called as activity series. Reactivity series or activity series is an empirical calculated and structurally analytical progression of a series of a metals which are arranged by their reactivity from highest to lowest. The following series known as reactivity series are given below :-- Potassium K most reactive Sodium Na Calcium Ca Magnesium Mg (Reactivity decreases from top to bottom) Aluminium Al Zinc Zn Iron Fe Lead Pb Hydrogen [H] Copper Cu Mercury Hg Silver Ag Gold Au least reactive