All three stable elements of the group have been known since prehistoric times, as all of them occur in metallic form in nature and no extraction metallurgy is necessary to produce them.
Copper was known … See more

Like other groups, the members of this family show patterns in electron configuration, especially in the outermost shells, resulting in trends in chemical behavior, although … See more

Silver is found in native form, as an alloy with gold (electrum), and in ores containing sulfur, arsenic, antimony or chlorine. … See more

Copper, although toxic in excessive amounts, is essential for life. It can be found in hemocyanin, cytochrome c oxidase and in superoxide dismutase. Copper is shown to have antimicrobial properties which make it useful for hospital doorknobs to keep … See more

Copper occurs in its native form in Chile, China, Mexico, Russia and the USA. Various natural ores of copper are: copper pyrites (CuFeS2), cuprite or ruby copper (Cu2O), See more

These metals, especially silver, have unusual properties that make them essential for industrial applications outside of their monetary or decorative value. They are all excellent See more