The complex utilizes inner orbital (3d) hybridization, forming six pairs of electrons from NH₃ ligands in octahedral geometry, resulting in diamagnetism due to the absence of unpaired electrons.

The magnetic behavior of a complex can provide insights into its geometry; for example, diamagnetic complexes like [Co(NH₃)₆]³⁺ suggest octahedral geometry due to the absence of unpaired electrons.

Werner’s theory couldn’t explain the selective formation of coordination compounds by specific elements, the directional properties of their bonds, and their distinct magnetic and optical features.

Valence Bond Theory (VBT), Crystal Field Theory (CFT), Ligand Field Theory (LFT), and Molecular Orbital Theory (MOT) are among the approaches suggested to elucidate the nature of bonding in coordination compounds.

Metal atoms or ions, influenced by ligands, undergo hybridization of their (n-1)d, ns, np orbitals to produce a set of equivalent orbitals with defined geometries (e.g., octahedral, tetrahedral). These hybridized orbitals then overlap with ligand orbitals to facilitate bonding.