Question

Why certain transition metal complexes do no show absorbtion in uv visible region?

Answer 1

The UV-Vis spectra of transition metal complexes arise as a result of electronic transitions ... The spectrum that you see is the combination of the different types of transitions as they ...

Answer 2

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The UV-Vis spectra of transition metal complexes arise as a result of electronic transitions just as they do in organic compounds. ... When ligands bond to a transition metal ion to form a complex, electrons in the ligands and electrons in the five d orbitals of the metal ion repel each other.