Gold is a chemical element; its chemical symbol is Au and atomic number 79. In its pure form, it is a bright-metallic-yellow, dense, soft, malleable, and ductile metal. Chemically, gold is a transitio
A 5 mm (0.20 in) gold nugget (dot in front of frame) can be hammered into a gold foil of about 0.5 m2 (5.4 sq ft) in area.