Question

1) arrange Pb, Mg, and Zn in order of their activities listing most active 

2)  arrange Cu, Ag, and Zn in order of their activities listing most active

 

Answer 1

Explanation:

let's understand the reactivity of the metal.

The metal which can be able to lose its electron easily called as reactive or active metal. 

let's understand how the electronegativity of the metal affects the reactivity electronegativity is inversely proportional to the reactivity of the metal.

metal with high electronegativity does not lose its electron hence it becomes less active, while metal with less electronegativity is able to lose its electron easily and become active.

1) Mg>Zn>Pb : electronegativity of Mg=1.30, Zn=1,70, and Pb=2.33

thus Mg has a lower electronegativity than Zn and Pb hence the Mg is more active than Zn and Zn is more active than Pb.

2)Zn>Cu>Ag: electronegativity of Zn=1.70, Cu=1.90 and Ag=1.93

thus as compared to Ag and Cu Zn is more active. Cu is more active than Ag, hence reactivity  order become Zn>Cu>Ag

 

 

 

 

 

 

Answer:

1) Mg>Zn>Pb

2)Zn>Cu>Ag