Question

Determine the ground state term for Cr2+ using the Russell-Saunders coupling scheme and show how the term splits for this configuration in an octahedral crystal field. [5 marks]

(ii) The electronic spectrum of the complex K2[CoCl4] shows an intense absorption band ( > 100 L mol-1 cm-1 ) in the u.v. region. The corresponding spectrum for the tetra-iodo complex K2[CoI4] also shows one intense band, however the position of the band has shifted to the visible region. Explain these observations. Note: Neither of these absorptions arise from d-d transitions [5

Answer 1