Question

How does the activity series account for occurrence of metals??

Answer 1

●low reactive metal are generally found in free state
eg. gold

●middle metal of reactivity series are generally found in carbonate and sulphide Ore they have to calcinate and rosted respectively
eg. Zinc sulphate

●high reactive metal are purified by electrolysis
eg. NaCl

Answer 2

Here is your answer---

Metals when arranged in reactivity order of series and divided in three parts

1)K,Na,Ca,Mg,Al-- at the top part.

Occurence--- These are so reactive that they are never found in nature as free elements.

2)Zn,Fe,Pb,Cu--at the middle.

Occurence--- These occur mainly as oxides,sulphides or carbonates.

3)Ag,Au--at the bottom.

Occurence---These occur in free state due to lowest reactivity.

Hope it helps!!