Question

With the help of crystal field energy-
level diagram explain why the complex
[Cr(en),]® is coloured ?​

Answer 1

Answer:

For more details, see the Crystal Field Theory (CFT) page. A photon equal to the energy difference ∆o can be absorbed, promoting an electron to the higher energy level. As certain wavelengths are absorbed in this process, subtractive color mixing occurs and the coordination complex solution becomes colored.