Question

5.
The order of reactivity of metals is
a. Cu > Mg> Zn > Fe
c. Mg> Zn> Fe > Cu
b. Cu> Fe> Zn> Mg
d. Mg> Fe >Zn > Cu​

Answer 1

Answer:

c is the correct answer

Magnesium is more reactive than zinc which is more reactive than iron, which is more reactive than copper.

Answer 2

D

Fe is more reactive than Cu

Because Cu has 4 electrons in its outermost orbit whereas Fe has two electrons in its outer most orbit. For metal stability depends on how easily they lose the electrons during bonding. Since it is easier to lose 2 electrons than 4.So Fe is more reactive than Cu or Cu is less reactive than Fe.