Which of the following is the correct order of reactivity of metals?
A
Zn > Mg > Fe > Cu > Ag
B
Zn > Mg > Fe > Ag > Cu
C
Mg > Zn > Fe > Ag > Cu
D
Mg > Zn > Fe > Cu > Ag
Correct Answer: Mg > Zn > Fe > Cu > Ag
Greater the oxidation potential of metal, the more easily it can lose electrons and hence greater is its reactivity. As a result, a metal with greater oxidation potential can displace metals with lower oxidation potentials from their salt solutions. Hence, the correct order of reactivity is Mg > Zn > Fe > Cu > Ag.