Atomic mass of Gold is 196.9665 u. The atomic mass is the mass of an atom. The atomic mass or relative isotopic mass refers to the mass of a single particle, and therefore is tied to a certain specific isotope of an element. Calculate the no of gold atom in 300mg of a gold ring of 20 carat gold (atomic mass of gold =197,pure gold is 24 carat) 2 See answers abhi178 abhi178 ∵ 300mgof a gold ring is 20 of 20 Carat. It means in 300 mg ring, 20 part is pure gold and 4 part is other metal. Gold is the third element in the eleventh column of the periodic table. It is classified as a transition metal. Gold atoms have 79 electrons and 79 protons with 118 neutrons in the most abundant isotope.

Isotope	Atomic mass (Da)	Isotopic abundance (amount fraction)
197Au	196.966 570(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

CIAAW

Atomic Mass Of Golf

Gold
A_r(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.