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    Gold

    Isotope Atomic mass (Da) Isotopic abundance (amount fraction)
    197Au196.966 569(5)1

    Gold is a monoisotopic element and its atomic weight is determined solely by its isotope 197Au. The Commission last revised the standard atomic weight of gold in 2013 based on the latest Atomic Mass Evaluation by IUPAP.

    SOURCE  Atomic weights of the elements: Review 2000 by John R de Laeter et al. Pure Appl. Chem. 2003 (75) 683-800
    © IUPAC 2003

    CIAAW

    Gold
    Ar(Au) = 196.966 569(5) since 2013

    The name derives from the Sanskrit jval for "shine", the Teutonic word gulth for "shining metal", and the Anglo-Saxon gold of unknown origin. The symbol Au derives from the Latin aurum, for Aurora, the goddess of dawn. Gold was known and highly valued in prehistoric times.