Gold (Au)
Aurum
Gold (Au) is a transition metal in period 6, group 11. Its relative atomic mass is 196.97 and the molar mass of the atom is 196.97 g/mol.
Atomic number 79
Atomic mass 196.97
Molar mass 196.97 g/mol
Category Transition metal Solid
Properties of gold
| Atomic number | 79 |
|---|---|
| Symbol | Au |
| Latin name | Aurum |
| Relative atomic mass | 196.97 |
| Molar mass | 196.97 g/mol |
| Group, period, block | 11, 6, d |
| Category | Transition metal |
| State at 20 °C | Solid |
| Electron configuration | [Xe] 4f¹⁴ 5d¹⁰ 6s¹ |
| Electronegativity (Pauling) | 2.54 |
| Atomic radius | 135 pm |
Electron configuration of gold
Electrons per shell
K2L8M18N32O18P1
Full notation
1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d¹⁰ 6s¹
Noble-gas notation
79 protons · 79 electrons[Xe] 4f¹⁴ 5d¹⁰ 6s¹
Formula and compounds of gold
Simple substanceAugoldMolar mass of Au: 196.97 g/mol
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Frequently asked questions
The relative atomic mass of gold is 196.97, so the molar mass of the atom is 196.97 g/mol.
Full: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d¹⁰ 6s¹. Noble-gas notation: [Xe] 4f¹⁴ 5d¹⁰ 6s¹.