1 Statistics of Interatomic Distances.- 1.1 Some Statistical Concepts and Inferences.- 1.2 Statistics of Lengths of Interatomic Vectors.- Glossary of Symbols.- 1.3 References.- 2 Factors Influencing the Dispersion of Lengths of Interatomic Vectors.- 2.1 Application of Variance Analysis.- 2.2 Nonrigid Behavior of Central Monatomic Entities.- Glossary of Symbols.- 2.3 References.- 3 Statistics of Crystallographic Sites of Central Monatomic Entities.- 3.1 Crystallographic Sites.- 3.2 Lattice Complexes.- 3.3 Domains of Influence and Lattice Complexes.- 3.4 Matrix Representations of Symmetry Point Groups of Crystallographic Sites.- 3.5 Occurence of Central Monatomic Entities in Sites of Weissenberg Lattice Complexes.- Glossary of Symbols.- 3.6 References.- 4 Statistics of Bond Distances Between Central Monatomic Entities and Ligands.- 4.1 Terms of Monatomic Entities of Transition Elements and Splitting of their Energy Levels in the Crystal Field.- 4.2 Cu(II) Compounds.- 4.3 Ag(I) Compounds.- 4.4 Cd(II) Compounds.- 4.5 Fe(II) Compounds.- 4.6 Cr(III), Mo(V), Pd(II), Co(III), Ni(II), Zn(II), Nd(III), and Hg(II) Compounds.- Glossary of Symbols.- 4.7 References.- 5 Conclusions.- 5.1 References.- Chemical Abbreviations.- Appendix A.- References.- Appendix B.- Appendix C.- Appendix D.