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periodic table. n. 1. (Chemistry) a table of the elements, arranged in order of increasing atomic number, based on the periodic law. Elements having similar chemical properties and electronic structures appear in vertical columns (groups). (ËpÉªÉr iËÉd Éªk, ËpÉªÉr-).
The Periodic Table is a chart which arranges the chemical elements in a useful, logical manner. Elements are listed in order of increasing atomic number, lined up so that elements which exhibit similar properties are arranged in the same row or column as each other.The Periodic Table is one of the most useful tools of chemistry and the other sciences.Here are 10 fun and interesting Periodic Table facts:lements are listed in order of increasing atomic number, lined up so that elements which exhibit similar properties are arranged in the same row or column as each other. The Periodic Table is one of the most useful tools of chemistry and the other sciences. Here are 10 fun and interesting Periodic Table facts: