Symbol: AuAtomic Number: 79Atomic Weight: 196.966Classification: change metalPhase in ~ Room Temperature: SolidDensity: 19.282 grams per centimeter cubedMelting Point: 1064°C, 1947°FBoiling Point: 2856°C, 5173°FDiscovered by: Known about since ancient timesGold is the 3rd element in the eleventh tower of the routine table. That is classified together a shift metal. Gold atoms have 79 electrons and 79 protons with 118 neutron in the many abundant isotope.Characteristics and PropertiesUnder standard conditions gold is a shining yellow metal. That is an extremely dense and also heavy, yet also relatively soft. Yellow is the most malleable the the metals meaning that it deserve to be pounded into a really thin sheet. It is also one of the many ductile metals and also can be conveniently stretched into a long wire.Gold is much more than just a beautiful metal. The is fantastic conductor that electricity and also heat. That is additionally one that the most resistant metals to corrosion and also rust as soon as exposed to air and also water.Where is it found on Earth?Gold is an extremely rare facet on Earth. Because it doesn"t react with really many various other elements, that is often discovered in its native form in the Earth"s late or blended with other metals like silver. It deserve to be found in veins underground or in small fragments in sandy riverbeds.Gold is also found in s water. However, the process for retrieving yellow from ocean water costs an ext than the yellow itself.How is gold supplied today?Gold has been supplied for thousands of years to make jewelry and also coins. Today it is still offered for jewelry and also for part collector"s execution coins. Gold is also considered an important and trustworthy investment.

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When gold is offered as jewelry or for coins, that is generally not pure gold. Pure gold is referred to as 24 karat gold and also it is very soft. Generally gold is alloyed through other metals such together copper or silver- in stimulate to do it more difficult and much more durable.Gold is supplied a many in the electronic devices industry since of its good electrical conductivity and resistance to corrosion. Numerous electrical contacts and connectors space plated with gold because that protection and also reliability.Other applications because that gold encompass heat shielding, dental work, cancer treatment, and also decoration such as gold thread and also gold plating.How was it discovered?
Gold has been known about since ancient times. Human beings such as ancient Egypt offered gold end 5000 year ago. It has actually long been a substance of value and wealth.Where walk gold gain its name?Gold gets its surname from the Anglo-Saxon indigenous "geolo" because that yellow. The prize Au originates from the Latin word because that gold, "aurum."IsotopesGold has actually only one naturally occurring stable isotope: gold-197.Interesting Facts around GoldA solitary ounce the gold deserve to be pounded into a paper 300 feet large by 300 feet long. That"s bigger 보다 a football field! That exact same ounce can type a wire almost 100 kilometers long.Gold have the right to be pounded thin enough to allow light come shine through.If all the gold ever discovered by man was melted under it would form a cube through sides of around 25 meter each.
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