which ion, the cation, or the anion is responsible for the color seen? what is the evidence to support your choice?
Solution
Either the ion or the ion may be answerable for resolution color. Some transition metals turn out coloured cations however there ar many coloured anions like salt and salt. If you embrace organic ions, there ar Associate in Nursing virtually unlimited variety of anions and cations that ar coloured. within the case at hand, nickel is that the supply of color. the colour of nickel depends upon the state of the coordination sphere of the ion. during a crystalline state the water molecules coordinated with the nickel ion don't seem to be specifically within the same abstraction pure mathematics compared to nickel in resolution thanks to the restrictions of motion, thus the colour is totally different.
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