Question

Which of the following do you expect to be colored and why, Cr+ and Cu+?

Answer 1

Answer:

Cr+ is colored and Cu+ is not.

Explanation:

Cr+ is a blue-tinged natural color. It is used as a color pigment in the industry. The color of the rubies is due to the chromium. We use it to color glass as well. It is used for dying purposes. The reason behind this is, it has many isotopes but some of them are stable. Stability won’t allow the color to appear, so it is colored due to its unstable nature.

Cu+ is stable and has orbit filled with electrons. There is no space for any other element so it cannot be colored in nature. If we talk about cu++ it has space of one electron and it can be found in colored form.

Answer 2

Cr+ = coloured

Cu+ = Colourless