group 11

Also known as copper group, coinage metals, group 11 elements, Group 11 element

Group 11 elements (Copper group)

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Group 11 of the periodic table contains copper, silver, and gold—three soft, highly conductive metals that have been valued by humans for thousands of years. These elements matter because of their exceptional electrical conductivity, resistance to corrosion, and malleability, which make them essential for everything from electronics and jewelry to medicine and industrial applications.

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Commons category: Periodic table group 11

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group 10 ← → group 12

Group 11, by modern IUPAC numbering, is a group of chemical elements in the periodic table, consisting of copper (Cu), silver (Ag), gold (Au), and roentgenium (Rg), although no chemical experiments have yet been carried out to confirm that roentgenium behaves like the heavier homologue to gold. Group 11, more specifically the first three members, are also known as the coinage metals, due to their usage in minting coins—while the rise in metal prices mean that silver and gold are no longer used for circulating currency, remaining in use for bullion, copper remains a common metal in coins to date, either in the form of copper clad coinage or as part of the cupronickel alloy. They were most likely the first three elements discovered. Copper, silver, and gold all occur naturally in elemental form.