4.2.1: Evidence for Electronic Structures 4.2.1.1: Thermodynamic Data 4.2.1.2: Magnetic Susceptibility 4.2.1.3: Electronic Spectra 4.2.1.4: Coordination Number and Molecular Shapes 4.2.2: Bonding Theories 4.2.2.1: Crystal Field Theory 4.2.2.1.1: Crystal Field Theory 4.2.2.1.2: Colors of Coordination Complexes 4.2.2.1.3: Crystal Field Stabilization Energy 4.2.2.1.4: Factors That Affect the Magnitude of Δo 4.2.2.1.5: Jahn-Teller Distortions 4.2.2.1.6: Magnetic Moments of Transition Metals 4.2.2.1.7: Magnetism 4.2.2.1.8: Thermodynamics and Structural Consequences of d-Orbital Splitting 4.2.2.2: Ligand Field Theory