The classification of elements by atomic number allows us to understand many properties of the atom and makes it possible to predict behaviors instead of just having to memorize everything. The rows are arranged so that metals are on the left side of the table and nonmetals are on the right side. As shown in Table 8.2.1, thirteen of the top 25 chemicals produced in the United States are inorganic main group compounds. They are assorted in a tabular arrangement wherein a row is a period and a column is a group. ![]() The seven rows of the periodic table are called periods. In addition to being interesting in their own right as fundamental constituents of ordinary matter with a rich and interesting chemistry, the main group elements are of tremendous societal importance. The periodic table is an arrangement of all the elements known to man in accordance with their increasing atomic number and recurring chemical properties. ![]() (Credit: User:Cepheus/Wikimedia Commons Source: (opens in new window) License: Public Domain) The periodic table is a tabular arrangement of chemical elements that is arranged by increasing atomic number and groups elements according to recurring properties. In chemistry, a salt or ionic compound is a chemical compound consisting of an ionic assembly of. ![]() The yellow stipples show the electrostatic forces. The purple spheres represent sodium cations, Na +, and the green spheres represent chloride anions, Cl. \): The periodic table classifies elements by atomic number. Salt (chemistry) The crystal structure of sodium chloride, NaCl, a typical ionic compound.
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