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79Au196.967
Gold
Transition MetalGold is a chemical element with symbol Au (from Latin:aurum) and atomic number 79. In its purest form, it is a bright, slightly reddish yellow, dense, soft, malleable and ductile metal. Chemically, gold is a transition metal and a group 11 element.
Phase: SolidAppearance: metallic yellow
2, 8, 18, 32, 18, 1
Physical Properties
Atomic Mass196.9665695 u
Density19.3 g/cm³
Melting Point1337.33 K
Boiling Point3243 K
Molar Heat25.418 J/(mol·K)
Period6
PhaseSolid
Chemical Properties
Electron Configuration1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s1 4f14 5d10
Semantic Config[Xe] 4f14 5d10 6s1
Shells2, 8, 18, 32, 18, 1
Electron Affinity222.747 kJ/mol
Electronegativity2.54
Ionization Energies
IE1: 890.1 kJ/molIE2: 1980 kJ/mol
Discovery
Discovered byMiddle East