Why is Cu2O colored?

Answer 1

it is coloured due to charge transfer spectra . the charge flows from oxygen to copper

Answer 2

Cu2O is colored because it absorbs light in the visible spectrum. This absorption occurs due to the structure of the material, which allows it to interact with certain wavelengths of light and reflect or transmit others, giving it a characteristic color. In the case of Cu2O, the color is usually red due to its absorption properties in the visible range.

Answer 3

It is easier to tell why the sky is blue!

Apperently Cu2O absorbs all kind of light colors except the red (= wavelength > 660 nm)

Answer 4

The copper II ion in CuO has a different electron configuration and charge from the copper I ion in Cu2O and so will absorb and reflect different wavelengths of light.