Question

Q.1. Arrange these metals in decreasing order of their reactivity.Cu, Pb, Ag, Al​

Answer 1

Explanation:

The decreasing order of reactivity of Zn, Mg, Al, Cu, Fe is Mg > Al > Zn > Fe > Cu. Reactivity series is K > Na > Ca > Mg > Al > Zn > Fe > Pb > H > Cu > Hg > Ag > Au. The Arrangement of metals in the decreasing order of their reactivities is called the activity series of metals.

Answer 2

Answer:

Al >Pb>Cu>Ag

Explanation:

as aluminum is the most reactive metal from given elements it is written first after aluminum lead (Pb) is the second highest reactive metal and copper is the third while silver is the least reactive metal from given elements