Symbol: AuAtomic Number: 79Atomic Weight: 196.966Classification: shift metalPhase in ~ Room Temperature: SolidDensity: 19.282 grams per cm cubedMelting Point: 1064°C, 1947°FBoiling Point: 2856°C, 5173°FDiscovered by: Known around since ancient timesGold is the third element in the eleventh pillar 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. The is really dense and also heavy, however also reasonably soft. Yellow is the many malleable that the metals an interpretation that it deserve to be pounded into a an extremely thin sheet. That is also one of the most ductile metals and also can be quickly stretched right into a lengthy wire.Gold is much more than just a beautiful metal. That is wonderful conductor the electricity and also heat. The is likewise one of the most resistant steels to corrosion and also rust as soon as exposed to air and water.Where is it uncovered on Earth?Gold is really rare facet on Earth. Because it doesn"t reaction with really many other elements, it is often uncovered in that is native kind in the Earth"s late or mixed with other metals like silver. It deserve to be found in veins secret or in little fragments in sandy riverbeds.Gold is also found in ocean water. However, the process for retrieving gold from ocean water costs much more than the yellow itself.How is gold offered today?Gold has actually been used for thousands of years to do jewelry and coins. This particular day it is still offered for jewelry and also for part collector"s execution coins. Yellow is likewise considered an essential and reputable investment.

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When yellow is supplied as jewelry or for coins, that is typically not pure gold. Pure gold is dubbed 24 karat gold and also it is really soft. Normally gold is alloyed through other steels such together copper or silver in bespeak to do it more tough and much more durable.Gold is supplied a lot in the electronic devices industry because of its an excellent electrical conductivity and resistance to corrosion. Plenty of electrical contacts and also connectors are plated with gold for protection and also reliability.Other applications for gold include heat shielding, dentist work, cancer treatment, and also decoration such together gold thread and gold plating.How was it discovered?
Gold has been known around since old times. Human beings such as old Egypt supplied gold end 5000 years ago. It has actually long been a substance of value and wealth.Where go gold gain its name?Gold gets its surname from the Anglo-Saxon word "geolo" for yellow. The symbol Au originates from the Latin word for gold, "aurum."IsotopesGold has actually only one naturally emerging stable isotope: gold-197.Interesting Facts around GoldA solitary ounce that gold deserve to be pounded right into a sheet 300 feet large by 300 feet long. That"s bigger 보다 a football field! That same ounce can kind a wire practically 100 kilometers long.Gold deserve to be pounded thin sufficient to allow light to shine through.If all the gold ever uncovered by guy was melted under it would kind a cube v sides of about 25 meter each.
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