Metallic elements tend to act as Lewis acids and form complexeswith a variety of Lewis bases. Since most elements are metals, andalmost all metals form complexes, it is important to understand these complexes. Many biological molecules, such as the chlorophyllused by plants to harvest the energy of sunlight, are coordination compounds, or compounds containing one or more metal complexes.
Question:
What is the name of the phenomenon that makes the stability of a complex increase when two or more donor atomsare connected by a backbone that allows them to coordinate simultaneously to a metal ion?