Question

The metal that exhibits variable valency is.................
a.Al
b.Cu
c.Ca
d.Mg​

Answer 1

Answer:

b.Cu.

Hope it helps u..

Answer 2

Answer:

Copper shows variable valency as it is a d block element. Thus, copper forms compounds containing Cu+ ions or Cu++ ions. Representative elements sodium, calcium and magnesium shows +1, +2 and +2 oxidation states respectively.