Copper vs Gold
Pick up to 3 elements and see how they stack up.
| Property | Copper | Gold |
|---|---|---|
| Atomic number | 29 | 79 |
| Atomic mass | 63.546 | 196.97 |
| Electronegativity | 1.9 | 2.54 |
| Melting point | 1,357.77 K (1,084.6 °C) | 1,337.33 K (1,064.2 °C) |
| Boiling point | 2,835 K (2,561.8 °C) | 3,243 K (2,969.8 °C) |
| Density | 8.96 g/cm³ | 19.3 g/cm³ |
| Atomic radius | 140 pm | 166 pm |
| Ionization energy | 7.726 eV | 9.226 eV |
| Discovered | Ancient | Ancient |
| Category | Transition metal | Transition metal |
| State at room temp. | Solid | Solid |
| Block | d | d |
| Group | 11 | 11 |
| Period | 4 | 6 |
| Valence electrons | 1 | 1 |
| Common charges | +1, +2 | +1, +3 |
| Electron configuration | [Ar] 3d10 4s1 | [Xe] 4f14 5d10 6s1 |