Scientific sources

Reference priority

• IUPAC terminology and nomenclature
• NIST measured chemistry and atomic data
• CIAAW atomic weights
• PubChem compound records
• Evaluated nuclear data
• Peer-reviewed literature and authoritative textbooks

Authoritative databases

• IUPAC Gold Book
• NIST Chemistry WebBook
• NIST Atomic Spectra Database
• CIAAW Standard Atomic Weights
• PubChem
• Atomic Mass Data Center

Citation rule

A source link identifies where a value or definition came from; it does not imply that the source endorses YogiChemX. When a source does not provide a value, the interface should say “Not available” rather than inventing an estimate.