About 281 results
Open links in new tab
  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 › ptable › atomic-mass

    Atomic Mass | Periodic Table of Elements - PubChem

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

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

    PERIODIC TABLE OF ELEMENTS - PubChem

    PERIODIC TABLE OF ELEMENTS

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

    Arsenic | As (Element) - PubChem

    https://www.nist.gov/pml/database-disclaimer Arsenic https://physics.nist.gov/cgi-bin/Elements/elInfo.pl?element=33 IUPAC Periodic Table of the Elements and Isotopes …

  5. nih.gov
    https://pubchem.ncbi.nlm.nih.gov › periodic-table › boiling-point

    Boiling Point | Periodic Table of Elements - PubChem

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

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

    PERIODIC TABLE OF ELEMENTS - PubChem

    PERIODIC TABLE OF ELEMENTSChemical Group Block 18

  7. nih.gov
    https://pubchem.ncbi.nlm.nih.gov › ptable › electronegativity

    Electronegativity | Periodic Table of Elements - PubChem

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

  8. 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).

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

    Germanium | Ge (Element) - PubChem

    First proposed to exist by Dmitri Mendeleyev in 1871 based on gaps in his newly created Periodic Table of Elements, germanium was discovered by the German chemist Clemens Winkler in …

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

    IUPAC Periodic Table of the Elements and Isotopes (IPTEI)

    May 2, 2025 · The IUPAC (International Union of Pure and Applied Chemistry) Periodic Table of the Elements and Isotopes (IPTEI) was created to familiarize students, teachers, and non …