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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 › periodic-table › atomic-radius

    Atomic Radius | Periodic Table of Elements - PubChem

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

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

    Tennessine | Ts (Element) - PubChem

    Periodic Table element Summary Tennessine Tennessine is a chemical element with symbol Ts and atomic number 117. Classified as a halogen, Tennessine is a expected to be a solid at …

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

    Gold | Au (Element) - PubChem

    Periodic Table element Summary Gold Gold is a chemical element with symbol Au and atomic number 79. Classified as a transition metal, Gold is a solid at 25°C (room temperature).

  6. nih.gov
    https://pubchem.ncbi.nlm.nih.gov › element › Oxygen

    Oxygen | O (Element) - PubChem

    Periodic Table element Summary Oxygen Oxygen is a chemical element with symbol O and atomic number 8. Classified as a nonmetal, Oxygen is a gas at 25°C (room temperature).

  7. nih.gov
    https://pubchem.ncbi.nlm.nih.gov › element › Cesium

    Cesium | Cs (Element) - PubChem

    https://www.nist.gov/pml/database-disclaimer Cesium https://physics.nist.gov/cgi-bin/Elements/elInfo.pl?element=55 IUPAC Periodic Table of the Elements and Isotopes …

  8. nih.gov
    https://pubchem.ncbi.nlm.nih.gov › element › Kr

    Krypton | Kr (Element) - PubChem

    [285] United States Geological Survey. Resources on Isotopes-Periodic Table-Krypton, U.S. Geological Survey (2014), Feb. 26; http://wwwrcamnl.wr.usgs.gov/isoig/period/kr_iig.html.

  9. nih.gov
    https://pubchem.ncbi.nlm.nih.gov › element

    Carbon | C (Element) - PubChem

    Chemical element, Carbon, information from authoritative sources. Look up properties, history, uses, and more.