Question

Arrange the metal Al, Cu, Fe, Pb, Mg, Zn and Na in descending order of their
reactivity towards oxygen.​

Answer 1

$\boxed{Answer}$

The metal which is more reactive towards the 'metal' is more vigorously burns in the oxygen. So according the reaction with oxygen the metal can be arranged in the descending order- 'Na, Mg, Al, Zn, Fe, Pb, Cu'. This arrangement is done on the basis of the vigorously burn the metal with the oxygen.

Answer 2

Na , Zn , Al , Cu , Fe , Pb , Mg

I wish that this will help you .

I am not sure about this

But if this is wrong I am sorry.