Group 11 elements
Group 11 of the periodic table contains these elements: Copper, Silver, Gold, Roentgenium.
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| No. | Symbol | Element | Atomic weight (u) | Density (g/cm³) | Melting point (K) | Boiling point (K) | Electronegativity | Discovered |
|---|---|---|---|---|---|---|---|---|
| 29 | Cu | Copper | 63.5463 | 8.96 | 1357.77 | 2835 | 1.9 | 9000 BC |
| 47 | Ag | Silver | 107.868 | 10.49 | 1234.93 | 2435 | 1.93 | 5000 BC |
| 79 | Au | Gold | 196.967 | 19.3 | 1337.33 | 3243 | 2.54 | 6000 BC |
| 111 | Rg | Roentgenium | 281 | 28.7 | - | - | - | 1994 |