2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/17139Three fundamentally different electronic structures for 3d electron states in LaCoO3, discussed in the current literature, have been presented. We are in favour of the localized electron atomic- like approach that yields the discrete energy spectrum associated with the atomic-like states of the Co3+ ions in contrary to the continouos energy spectrum yielded by band theories. In our atomic-like approach the d electrons form the highly-correlated system 3dn described by S=2 and L=2. PACS No: 71.70.Ej : 75.10.Dg : 73.30.-m; Keywords: Mott insulators, electronic structure, crystal field, LaCoO3 Phys.Rev.Lett. 03-08-20006 pages in RevTex, 3 figures in EPSStrongly Correlated Electronstext