Why cuo is more acidic than al2o3 . al have +3 charge and cu have +2 charge so according to fajans rule cu is less acidic.which rule of fajans rule I should considered first.
As for as I know CuO is basic and reacts with acids and Al2O3 is amphoteric and reacts with both acid and base. So Al2O3 should be more acidic than CuO. Is the question correct?
Please once check the question, I also guess the same