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  1. nih.gov
    https://pubchem.ncbi.nlm.nih.gov › periodic-table

    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, …

  2. nih.gov
    https://pubchem.ncbi.nlm.nih.gov

    PubChem

    PubChem is the world's largest collection of freely accessible chemical information. Search chemicals by name, molecular formula, structure, and other identifiers. Find chemical and …

  3. nih.gov
    https://pubchem.ncbi.nlm.nih.gov › docs › periodic-table-element-pages

    Periodic Table - PubChem

    May 8, 2019 · Clicking an element in the PubChem Periodic Table directs you to the corresponding Element page. This page presents a wide variety of element information, …

  4. nih.gov
    https://pubchem.ncbi.nlm.nih.gov › element › Actinium

    Actinium | Ac (Element) - PubChem

    http://www.ciaaw.org/bylaws.htm Actinium https://www.ciaaw.org/ IUPAC Periodic Table of the Elements and Isotopes (IPTEI) LICENSE

  5. nih.gov
    https://pubchem.ncbi.nlm.nih.gov › element › Plutonium

    Plutonium | Pu (Element) - PubChem

    Plutonium is unique among the elements in its physicochemical complexities by virtue of its position at a transitional location in the periodic table where the 5f electrons are at the border …

  6. nih.gov
    https://pubchem.ncbi.nlm.nih.gov › periodic-table › pdf › Periodic_Table_…
    [PDF]

    PERIODIC TABLE OF ELEMENTS - PubChem

    PERIODIC TABLE OF ELEMENTS

  7. nih.gov
    https://pubchem.ncbi.nlm.nih.gov › docs › periodic-table-game-widget-ex…

    Periodic Table Game - PubChem

    PubChem widget example showing periodic table game.Please enable Javascript in order to use PubChem website.

  8. nih.gov
    https://pubchem.ncbi.nlm.nih.gov › source

    Consumer Product Information Database (CPID) - PubChem

    Mar 19, 2025 · The Consumer Product Information Database (CPID) contains health effects information for products used in the home and in some commercial/institutional settings that …

  9. nih.gov
    https://pubchem.ncbi.nlm.nih.gov › ptable › electron-affinity

    Electron Affinity | Periodic Table of Elements - PubChem

    Explore how electron affinity changes with atomic number in the periodic table of elements via interactive plots.

  10. nih.gov
    https://pubchem.ncbi.nlm.nih.gov › source

    Natural Product Activity and Species Source (NPASS)

    Sep 12, 2025 · The Natural Product Activity and Species Source Database (NPASS) is developed to provide a freely accessible database integrating detailed information of species sources and …