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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, …

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 …

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

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

Cocaine is a tropane alkaloid obtained from leaves of the South American shrub Erythroxylon coca. It has a role as a local anaesthetic, a central nervous system stimulant, a sodium …

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

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 …

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

Vanillin is a member of the class of benzaldehydes carrying methoxy and hydroxy substituents at positions 3 and 4 respectively. It has a role as a plant metabolite, an anti-inflammatory agent, …

Periodic Table element Summary Oganesson Oganesson is a chemical element with symbol Og and atomic number 118. Classified as a noble gas, Oganesson is a expected to be a gas at …