Question

From the position of the aluminium (Al) metal in the activity series,it seems to be

quite reactive. However, it is not so reactive. Actually, when the metal is kept in

air or oxygen for sometime, it is converted into its oxide called aluminium oxide

(Al2O3

). This gets deposited on the surface of the metal as a thin coating. It is

rather passive which means that it is not reactive. Therefore, the metal is used for

packing food articles which do not get spoiled under the foil.

(i)

Which is the correct order of reactivity series?

(a) Mg < Ca < Na < K

(b) K < Na < Ca < Mg

(c) K < Mg < Na < Ca

(d) Mg < Ca < Na < K
​

Answer 1

Answer:

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Answer 2

Answer:

b) K<Na<Ca<Mg is the correct answer