#Gold on the periodic table code#

Germanium: Discovered in 1886 by Clemens Winklerģ3. Gallium: Discovered in 1875 by Paul-Émile Lecoq de Boisbaudranģ2. Zinc: Identified as an element in 1746 by Andreas Marggraf, but known to prehistoric humansģ1. Copper: Copper was discovered by prehistoric humansģ0.

Nickel: Discovered in 1751 by Axel Fredrick CronstedtĢ9. Cobalt: Discovered in 1739 by George BrandtĢ8. The year is estimated to be approximately 3500BCĢ7. Iron: Iron was discovered by prehistoric humans. Manganese: Discovered in 1774 by Johan Gottlieb GahnĢ6. Chromium: Discovered in 1798 by Nicholas Louis VauquelinĢ5. Vanadium: Discovered in 1801 by Andrés Manuel del RioĢ4. Titanium: Discovered in 1791 by William GregorĢ3. Scandium: Discovered in 1879 by Lars Frederik NelsonĢ2. Calcium: Discovered in 1808 by Humphry DavyĢ1. Potassium: Discovered in 1807 by Humphry DavyĢ0. © ElementsDatabase.Argon, which glows purple when used in a specialised lamp, was discovered in 1894.ġ9.

#Gold on the periodic table code#

You can link to this page, using the code below: This is why the gold standard was created. Gold is extremely valuable and has sustained its value over time, notwithstanding highs and lows throughout the course of history. It has 36 known radioactive isotopes, which are synthetic. Gold has only one isotope that is found in nature. The density of lead is much lower – one cubic meter weighs around 11 kg. The metal is also extremely dense – one cubic meter weighs almost 20 kg. Gold is most frequently found in the oxidation states +1 (aurous compounds or gold (I)) and +3 (auric compounds or gold (III)). One karat equals one part in 24 thus, an 18-karat gold earring contains 6 parts alloy and 18 parts gold. The unit karat is used to measure the gold amount is alloys. In addition, gold is used to make dental fillings, decorative items, and coins. It is very effective as a component because it is malleable and resistant to corrosion. Gold is also widely used in electronics, electric wiring, and more. Because of these properties, gold can be used in the production of printed circuit boards and electrical connectors. The metal is a good conductor of electricity and heat and when exposed to air, it does not tarnish. A little less than this amount serves as investments, and a small part is used in industry. The biggest portion of gold is used to make jewelry. Nitric acid dissolves silver but gold is insoluble in it, which is why nitric acid is used to prove the presence of gold in various items.Įver since gold has been known to man, 165,000 tons of it has been mined. It dissolves in cyanide’s alkaline solutions and in mercury. Gold can be dissolved by nitro-hydrochloric acid. Sometimes it is also found as a compound with the element tellurium in minerals. This is why gold is found naturally in the environment in rocks, alluvial deposits and veins. It is among the least reactive solid elements in the periodic table. Gold is one of the group 11 elements, the others being silver and copper. Gold does not lose its bright color, because it does not oxidize in air or water.

It is alloyed with metals like palladium, platinum, and copper as to increase its strength. This comes as a great disappointment to rich but stupid people who want jewelry made of pure gold. Pure, 24-karat gold is bright yellow in color and extremely malleable, so that it is impossible to make anything out of it. One ton of seawater contains about one milligram of gold but extraction is more expensive than what the gold is worth. While gold occurs independently of other metals, most often it is mined in conjunction with copper, zinc, lead, silver, and tellurium. This is a pity, because 'why is gold Au and not G' is the standard question of chemistry students, who are baffled by the odd symbol and even more baffled by what Aurum could possibly mean. Perhaps the lustrous, shiny, and attractive metal was found by someone early in the morning glittering somewhere and this person, enticed by what they saw, gave it this name. What formed this association is not known, because gold has been known to man since antiquity or about 5,500 years. Gold (symbol Au, atomic number 79) has it's name from the Latin 'Aurum', which means shining dawn.