21. It is considered to be reasonable to describe the coordination number as 12 rather than 6. 22. The coordination number of 9 in this complex is the highest known for any rhenium complex. 23. Each thorium has coordination number nine. 24. Most such complexes feature an additional water ligand, giving an overall coordination number of nine. 25. The coordination numbers of complexes 1-4 are 7, 7, 8 and 6. 26. The number of donor atoms attached to the central atom or ion is called the coordination number . 27. This is known as the coordination number which is the number of nearest neighbouring particles in a structure. 28. In a descriptive but only intermittently used nomenclature, phosphorus compounds are identified by their coordination number ?. 29. Coordination numbers of 8 to 12 are commonly observed for " f "-block elements.30. Shannon gives different radii for different coordination numbers , and for high and low spin states of the ions.
