Atomic Mass Of Gold


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Atomic mass of gold in kilogramsAtomic mass of golfAtomic mass of gold iodide

Name: Gold Symbol: Au Atomic Number: 79 Atomic Mass: 196.96655 amu Melting Point: 1064.43 °C (1337.5801 K, 1947.9741 °F) Boiling Point: 2807.0 °C (3080.15 K, 5084.6 °F) Number of Protons/Electrons: 79 Number of Neutrons: 118 Classification: Transition Metal Crystal Structure: Cubic Density @ 293 K: 19.32 g/cm 3 Color: Gold Atomic Structure. Molecular mass (molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12) Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol. Weights of atoms and isotopes are from NIST article.

IsotopeAtomic mass (Da)Isotopic abundance (amount fraction)
197Au196.966 570(4)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 2017 based on the latest Atomic Mass Evaluation by IUPAP.

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


Relative Atomic Mass Of Gold

Ar(Au) = 196.966 570(4) since 2017
The name derives from the Sanskrit jval for 'shine', the Teutonic word gulth for 'shining metal', andthe 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.