Traditionally the study of chemical elements has been limited to well-known concepts like the periodic properties and chemical families. However, current information shows a new and rich language that allows us to observe relations in the elements that are not limited to their positions in the table. These relations are evident when reactions are represented through networks, as in the case of similar reactivity of organic compounds sharing functional groups. For the past two decades, it has been argued that network reactions may be considered the core of chemistry. This network, which constitutes the basic set of chemical knowledge, provides the basis for classification and delivers routes to obtain new and known substances. In order to provide an example, we constructed and analyzed a network of chemical elements from the formation of stoichiometric binary compounds, providing to the chemistry, a formal structure of extracting the chemical knowledge. Thus, we explored all possible presence of relationships among elements. Concepts like degree centrality and centralization, the relationships among metals, semimetal and nonmetal classes, blocks, and chemical families were analyzed. We observed that the network structure had a small core set of elements of high reactivity and also a peripheral set of elements of low reactivity. The classes, blocks and families show the following increasing order of reactivity: nonmetals > semimetals > metals; p > s > d > f; and families: boron, carbon, pnictogens, chalcogens, halogens, lanthanoids > other families. This example shows, from the network perspective, that the elements and their classifications exhibit properties such as the reactivity, order, and similarity.

中文翻译：

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网络理论：一种通过化学计量二元化合物谈论化学元素关系的新语言

传统上，化学元素的研究仅限于众所周知的概念，如周期特性和化学家族。然而，当前的信息显示了一种新的丰富的语言，它使我们能够观察元素之间的关系，而不仅限于它们在表中的位置。当反应通过网络表示时，这些关系是显而易见的，例如在共享官能团的有机化合物的类似反应性的情况下。在过去的二十年里，一直有人认为网络反应可能被认为是化学的核心。该网络构成了基本的化学知识，为分类提供了基础，并提供了获取新物质和已知物质的途径。为了提供一个例子，我们构建并分析了化学计量二元化合物形成的化学元素网络，为化学提供了提取化学知识的正式结构。因此，我们探索了元素之间所有可能存在的关系。分析了度中心性和中心化等概念，分析了金属、半金属和非金属类、块和化学家族之间的关系。我们观察到网络结构有一组小的高反应性核心元素和一组低反应性外围元素。类别、块和族显示以下反应性递增顺序：非金属 > ​​半金属 > ​​金属；p > s > d > f; 和科：硼、碳、色素、硫属元素、卤素、镧系元素 > 其他科。这个例子表明，