Question

1.Draw the resonance structures of aromatic cthers.
2.With the help of crystal field energy level diagram, explain why the complex (Cren),I'* is coloured?​

Answer 1

Q.2- The absorption of the wavelength of light promotes an electron from the t2g level to eg level. Therefore, in the complex [Cr(en)3]3+, d-d transitions are possible. Hence, the complex is coloured.

Q 1 is in this attachment.