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The periodic table is a chart that organizes all known chemical elements into rows (periods) and columns (groups) based on their atomic number, electron configuration, and recurring chemical properties. Developed over time by many scientists, it is credited to Dmitri Mendeleev, who published its first version in 1869. The table helps scientists understand element properties, predict trends, and quickly find information such as an element's name, symbol, atomic mass, and electron configuration. W
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