Question

Arrange in order of increasing reactivity
Au, Zn ,Mg, Na , All , And , Ca, Pb, fe

Answer 1

Answer:

Explanation:

Since, the given elements are all metals and it is known that reactivity of metals increases when we move from right to left in a periodic table.

Also, out of the given options Cu, K, Fe, Ca, and Zn are the elements that belong to period 4. Whereas Cu, Ag, Au belongs to same group where Cu is the most reactive and Au is the least reactive in nature.

Also, Zinc is able to displace iron in a solution. Hence, Zn is more reactive than Fe.

Hence, we can conclude metals in order of increasing reactivity as follows.

                    Au < Ag < Cu < Fe < Zn < Ca < Na < K

Explanation:

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