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  1. science periodic table

    Organizing and summarizing search results for you
    The periodic table of chemical elements organizes all discovered elements in rows (periods) and columns (groups) according to increasing atomic number. Scientists use it to quickly refer to information about an element, such as atomic mass and chemical symbol.
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  2. Periodic Table of Elements - PubChem

    Interactive periodic table with up-to-date element property data collected from authoritative sources. Look up chemical element names, symbols, atomic masses and other properties, visualize trends, or even test your elements …

     
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