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 …

Periodic Table of Elements - PubChem Periodic Table of Elements

PERIODIC TABLE OF ELEMENTS Chemical Group Block 18

Periodic Table Yttrium Yttrium is a chemical element with symbol Y and atomic number 39. Classified as a transition metal, Yttrium is a solid at 25°C (room temperature).

Periodic Table Tin Tin is a chemical element with symbol Sn and atomic number 50. Classified as a post-transition metal, Tin is a solid at 25°C (room temperature).

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

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

Explore Resources Periodic Table of Elements Classification Browser Search and Analysis Tools Chemical Safety Information

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

IUPAC Periodic Table of the Elements and Isotopes (IPTEI) - PubChem data source information. Find all the data submitted to PubChem by IUPAC Periodic Table of the Elements and Isotopes (IPTEI).