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, …

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, …

Explore how density 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 …

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

[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.

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 …

Periodic Table element Summary Mercury Mercury is a chemical element with symbol Hg and atomic number 80. Classified as a transition metal, Mercury is a liquid at 25°C (room …

https://www.nist.gov/pml/database-disclaimer Lead https://physics.nist.gov/cgi-bin/Elements/elInfo.pl?element=82 IUPAC Periodic Table of the Elements and Isotopes …

https://www.nist.gov/pml/database-disclaimer Calcium https://physics.nist.gov/cgi-bin/Elements/elInfo.pl?element=20 IUPAC Periodic Table of the Elements and Isotopes …