Certain gold salts are still used as anti-inflammatories in medicine. This means that you could make a gold wire long enough to go around the earth with just 20 ounces of gold. Amazingly, one ounce of gold can be drawn into a wire 1250 miles long (thickness 1 micron). Gold is also used in infrared shielding, the production of colored glass, gold leafing, and tooth restoration. Gold is the most ductile of all metals, meaning it is the most suitable for drawing into wires. Gold's high malleability, ductility, resistance to corrosion and most other chemical reactions, and conductivity of electricity have led to its continued use in corrosion-resistant electrical connectors in all types of computerized devices (its chief industrial use). Gold is an expensive, rare and everlasting metal, it’s a chemical element with the symbol Au and atomic number 79. The world's consumption of new gold produced is about 50% in jewelry, 40% in investments, and 10% in industry. This is equal to a cube with each side measuring roughly 21.7 meters (71 ft). A total of around 201,296 tonnes of gold exists above ground, as of 2020. ![]() In 2020, the world's largest gold producer was China, followed by Russia and Australia. Gold coins ceased to be minted as a circulating currency in the 1930s, and the world gold standard was abandoned for a fiat currency system after the Nixon shock measures of 1971. In the past, a gold standard was often implemented as a monetary policy. Gold also dissolves in mercury, forming amalgam alloys, and as the gold acts simply as a solute, this is not a chemical reaction.Ī relatively rare element, gold is a precious metal that has been used for coinage, jewelry, and other arts throughout recorded history. Gold dissolves in alkaline solutions of cyanide, which are used in mining and electroplating. Gold is insoluble in nitric acid alone, which dissolves silver and base metals, a property long used to refine gold and confirm the presence of gold in metallic substances, giving rise to the term ' acid test'. Jewelry and other decorative objects have been crafted from gold for thousands of years. It is a dense, lustrous, yellow, malleable precious metal, so durable that it is virtually indestructible, often found uncombined in nature. Gold is resistant to most acids, though it does dissolve in aqua regia (a mixture of nitric acid and hydrochloric acid), forming a soluble tetrachloroaurate anion. gold, Metallic chemical element, one of the transition elements, chemical symbol Au, atomic number 79. ![]() Less commonly, it occurs in minerals as gold compounds, often with tellurium ( gold tellurides). It occurs in a solid solution series with the native element silver (as in electrum), naturally alloyed with other metals like copper and palladium, and mineral inclusions such as within pyrite. Gold often occurs in free elemental ( native state), as nuggets or grains, in rocks, veins, and alluvial deposits.
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