[cu(nh3)4]2+ solutions exhibit a deep blue-violet color. how can you use spectrophotometry to confirm that this reaction has occured and that the product formed is in fact tetraaminecopper(ii) sulfate? would you expect the wavelength of maximum absorbance for cu(nh3)4 2+ to be greater than or less than the max absorbance for cu(h2o)6 2+? explain.

In chemistry, the type of an atom (what element it is) is determined by: a) the number of protons it contains in its nucleus. b) the number of neutrons it contains in its nucleus. c) the number of protons it has in a cloud around the nucleus. d) the number of neutrons it has in a cloud around the nucleus. e) the number of electrons it exchanges with its neighbors.