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The Orgel diagram for [Cr(H2O)6]2+ shows the splitting of the d orbitals in an octahedral complex due to ligand field theory. The d orbitals split into two sets: the lower energy t2g set (dxy, dyz, dxz) and the higher energy eg set (dz2, dx2-y2). The diagram would show three electrons in the t2g orbitals, resulting in a high spin configuration.