Arrange Ca, Pb, Fe, Na, Zn, Cu, and Al in the decreasing order of their reactivity.

Question

 (i) Arrange Ca, Pb, Fe, Na, Zn, Cu, and Al in the decreasing order of their reactivity. 

(ii) Answer the following question related to above (i) sequence : 

(a) Which of these is most likely to tarnish readily when exposed to the air ? 

(b) Which of these is most likely to be found in free state in nature ? 

(c) Which of these is most likely to react with cold water ?

Answer 1

(i) The decreasing order of the given metals is as follows : 

[Most reactive] Na, Ca, Al, Zn, Fe, Pb, and Cu [Least reactive] 

(ii) (a) Sodium [Na]. 

(b) Copper [Cu]. 

(c) Sodium [Na] and calcium [Ca].