Atomic Element Z = 79 • Transition Metal
Gold (Au) — Atomic Data, Electron Shells & Reactions
Gold (symbol Au, atomic number 79) has a standard atomic weight of 196.97 u and ground-state configuration [Xe] 4f14 5d10 6s1.
Atomic Number (Z)
79
IUPAC Symbol
Au
Standard Atomic Weight
196.97 g/mol
Period / Group / Block
6 / 11 / d-block
Condensed Electron Config
[Xe] 4f14 5d10 6s1
Full Subshell Config
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 6s1
Principal Shell Occupancy
[2, 8, 18, 32, 18, 1]
Pauling Electronegativity
2.54
First Ionization Energy
890 kJ/mol
Covalent Radius
136 pm
Melting Point
1337.33 K (1064.18 °C)
Boiling Point
3129 K (2855.85 °C)
Density
19.282 g/cm³
Oxidation States
+3, +1
Au (Z=79) — Valence shell highlighted in vermilion