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 knowledge by playing a periodic table game!

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

As we mark the 150th anniversary of the periodic table, the scientific community has declared 2019 to be “The International Year of the Periodic Table”. PubChem is celebrating by launching the PubChem Periodic Table and corresponding Element pages.

Periodic Table element Summary Nobelium. Nobelium is a chemical element with symbol No and atomic number 102. Classified as an actinide, Nobelium is a solid at room temperature.

Periodic Table element Summary Sodium. Sodium is a chemical element with symbol Na and atomic number 11. Classified as an alkali metal, Sodium is a solid at room temperature.

Periodic Table element Summary Sulfur. Sulfur is a chemical element with symbol S and atomic number 16. Classified as a nonmetal, Sulfur is a solid at room temperature.

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

Periodic Table element Summary Magnesium. Magnesium is a chemical element with symbol Mg and atomic number 12. Classified as an alkaline earth metal, Magnesium is a solid at room temperature.

Periodic Table element Summary Carbon. Carbon is a chemical element with symbol C and atomic number 6. Classified as a nonmetal, Carbon is a solid at room temperature.

Periodic Table element Summary Manganese. Manganese is a chemical element with symbol Mn and atomic number 25. Classified as a transition metal, Manganese is a solid at room temperature.