Could you rephrase in third person in past tense (its an American chemical society) please? thank you, it should be university level
Negative ions in the crystal split the energy of the d atomic orbitals on the transition-metal ion. The tetrahedral crystal field splits these orbitals into the same t2g and eg sets of orbitals as does the octahedral crystal field.6 In tetrahedral case, two orbitals in the eg set are now lower in energy than the three orbitals in the t2g set. Tetrahedral using crystal field theory can be used to understand more on the splitting of d orbitals. Four ligands lying at alternating corners of a cube to form a tetrahedral geometry. The dx2-y2 and dz2 orbitals on the metal ion at the center of the cube lie between the ligands, and the dxy, dxz, and dyz orbitals point toward the ligands. As a result, the splitting observed in a tetrahedral crystal field is the opposite of the splitting in an octahedral complex. Tetrahedral complex has fewer ligands, the magnitude of the splitting is smaller.