[sodiumman]

Hi Forum,
I teach hs chem in Australia.  Aware of the 3d10, 4s2 structure of zinc, so why is it so much more reactive than copper, that seems to have incomplete shells?
Ta,Dave

[Schrödinger]

Reactivity doesn't depend on electronic configuration alone. There are other factors like IE, HE and SE.

IE= Ionization enthalpy
HE = Hydration enthalpy
SE = Sublimation enthalpy.

You have to compare the E^o values as well.
This incorporates all the 3 factors.

Thus, you get a more accurate picture of reactivity.
Also, refer to the reactivity series to see that Zn well above Cu.