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 · Table View is the traditional periodic table any scientist would instantly recognize. List View provides a summary view, allowing you to see all properties available for each …

Geochronology and Thermochronology by the 40Ar/39Ar Method, p. 212, Oxford University Press, Oxford (1999). [170] United States Geological Survey. Periodic Table-Argon, U.S. Geological …

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 …

PubChem is the world's largest collection of freely accessible chemical information. Search chemicals by name, molecular formula, structure, and other identifiers. Find chemical and …

Periodic Table element Summary Krypton Krypton is a chemical element with symbol Kr and atomic number 36. Classified as a noble gas, Krypton is a gas at 25°C (room temperature).

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

Periodic Table element Summary Nickel Nickel is a chemical element with symbol Ni and atomic number 28. Classified as a transition metal, Nickel is a solid at 25°C (room temperature).

Periodic Table element Summary Ruthenium Ruthenium is a chemical element with symbol Ru and atomic number 44. Classified as a transition metal, Ruthenium is a solid at 25°C (room …

It has the highest equivalent weight of any element, and is the most unstable of the first 101 elements of the periodic system. Thirty-three isotopes of francium are recognized.