Question

Arrange these metals in order of increasing reactivity
Zn , Al , Cu ,Fe ,Mg , Na

Answer 1

Here is Ur answer....

Cu < Fe < Zn < Al < Mg < Na.

Answer 2

Here we are given few elements and we are asked to arrange them in increasing order of their reactivity .

The answer will be :

Cu < Fe < Zn < Al < Mg < Na

Explanation :

There is a series called electro-chemical series or reactivity series.

The reactivity series however arranges elements in order of decreasing reactivity .

K

Na

Ca

Mg

Al

Zn

Fe

Pb

Cu

Hg

Ag

Au

These are some elements excluding H ( Hydrogen ) .

So if you reverse the series then we can find the elements in increasing order of the reactivity .

Au < Ag < ......... < K

Hence you can take the help of this series and solve the problem which is given to us.