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< Back Gold  SEE PERIODIC TABLE   SEE FULL ARTICLE Atomic Number 79 Atomic Symbol Au Atomic Weight 196.96654 amu Group Transition, 11 Form Solid Density @ STP 19.3 g/cm3 Melting Point 1064.18 °C (1947.52 °F, 1337.33 °K) Boiling Point 2856 °C (5172.8 °F, 3129.15 °K) Heat of Fusion 12.55 kJ/mol Heat of Vaporization 59.3 kJ/mol First Ionization Potential 9.22567 eV Electronegativity (on Pauling scale) 2.4 Specific Heat Capacity 0.129 J/g K Ground State Electron Configuration 5d10 6s1 Oxidation States +1, +3 Stable Isotopes and Natural Abundance on Earth 197Au, 100% Selected Radioisotopes 194Au, 198Au, 199Au Atomic Radius 174 pm Crystal Structure Cubic

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