Gold

Transition metal · 196.96657 u · group 11, period 6

Gold · Au

Atomic number79

SymbolAu

CategoryTransition metal

Standard stateSolid

Group · Period · Block11 · 6 · d

Electron configuration[Xe]6s1 4f14 5d10

Atomic mass196.96657 u

Atomic radius166 pm

Protons / Neutrons / Electrons79 / 118 / 79

Shells (e⁻ per shell)2, 8, 18, 32, 18, 1

Electronegativity (Pauling)2.54

Ionization energy9.226 eV

Electron affinity2.309 eV

Oxidation states+3, +1

Melting point1.34e+3 K · 1.06e+3 °C

Boiling point3.13e+3 K · 2.86e+3 °C

Density19.282 g/cm³

Year discoveredAncient

CPK color

#FFD123

State at room temp (25 °C)

solid

Position