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 …

This produced one atom of moscovium-287 and three atoms of moscovium-288. All four atoms quickly decayed into other elements. Moscovium's most stable isotope, moscovium-289, has a half-life of …

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

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

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

PERIODIC TABLE OF ELEMENTS

GHS, the Globally Harmonized System of Classification and Labeling of Chemicals, was developed by the United Nations as a way to bring into agreement the chemical regulations and standards of …

https://www.nist.gov/pml/database-disclaimer Sodium https://physics.nist.gov/cgi-bin/Elements/elInfo.pl?element=11 IUPAC Periodic Table of the Elements and Isotopes (IPTEI) …

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

The name derives from the Greek argos for "lazy" or "inactive" because it does not combine with other elements. It was discovered in 1894 by the Scottish chemist William Ramsay and the English …