Atkins, Peter W. The periodic table is arguably the most important concept in chemistry, both in principle and in practice. It is the everyday support for students, it suggests new avenues of research to professionals, and it provides a succinct organization of the whole of chemistry. It is a remarkable demonstration of the fact that the chemical elements are not a random clutter of entities but instead display trends and lie together in families. . .Anyone who seeks to be familiar with a scientist’s-eye view of the world must be aware of the general form of the periodic table, for it is a part of scientiﬁc culture.