Au is the chemical symbol for gold.
AU is the chemical symbol for gold according to the periodic table. When it is used in the context of "999 gold," it signifies that the gold is 99.9% pure.
Gold (Au) is located in Group 11 and Period 6 of the periodic table.
AU is the chemical symbol for gold on the periodic table of elements.
Hydrogen (H) is the first element in the periodic table.
_The 79th element on the periodic table is Gold, Au