Gold (Au)

Gold is a chemical element with symbol Au and atomic number 79. In its purest form, it is a bright, slightly reddish yellow, dense, soft, malleable, and ductile metal.

Atomic Number

79

Atomic Mass

196.97 u

Category

transition metal

Phase

solid

Density

19.3 g/cm³

Electron Shells

2, 8, 18, 32, 18, 1

Atomic Structure

Protons: 79 • Electrons: 79 • Neutrons: Varies by isotope

Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s¹ 4f¹⁴ 5d¹⁰

Discovery

Unknown