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The Periodic Table: History of the Elements

History of the Elements

Periodic table, in full periodic table of the elements, in chemistry, the organized array of all the chemical elements in order of increasing atomic number—i.e., the total number of protons in the atomic nucleus. When the chemical elements are thus arranged, there is a recurring pattern called the “periodic law” in their properties, in which elements in the same column (group) have similar properties. The initial discovery, which was made by Dmitry I. Mendeleyev in the mid-19th century, has been of inestimable value in the development of chemistry. Continue reading from Encyclopedia Britannica

Link to Actinides Resource Guide
Link to Alkaline Earth Metals Resource Guide
Link to Alkali Metals Resource Guide
Link to Halogens Resource Guide
Link to Lanthanides Resource Guide
Link to Metalloids Resource Guide
Link to Noble Gases Resource Guide
Link to Other Nonmetals Resource Guide
Link to Post Transition Metals Resource Guide
Link to Transition Metals Resource Guide
Link to Unknown Properties Resource Guide
Link to Science Reference Center Database