79Au196.97
Gold (Au)
Element 79 · Transition metal
Gold (Au) is a chemical element with atomic number 79. It is classified as a transition metal in period 6, group 11 of the periodic table (the d-block). Its standard atomic weight is 196.97 u and its ground-state electron configuration is [Xe] 4f¹⁴ 5d¹⁰ 6s¹.
Gold facts
| Atomic number (Z) | 79 |
|---|---|
| Symbol | Au |
| Standard atomic weight | 196.97 u |
| Category | Transition metal |
| Group | 11 |
| Period | 6 |
| Block | d-block |
| Electron configuration | [Xe] 4f¹⁴ 5d¹⁰ 6s¹ |
| Electronegativity (Pauling) | 2.54 |
| State at 20 °C | Solid |
| Protons / electrons | 79 / 79 |
| Neutrons (most common isotope, approx.) | 118 |
| Molar mass | 196.97 g/mol |