The Element Gold and Its Properties
Gold, an element many people desire, is one of the most valuable elements in the world. In chemistry, gold, which occupies a place in group II B of the periodic table, is very likely the purest metal known to humanity. In ancient Egyptian history and excavations, gold artifacts have been found alongside a great many copper objects. Around 2000 BCE, the Cretans searched for gold at the foothills of the Caucasus Mountains and were heavily involved in gold mining. Written records indicate that in ancient times, even during the Roman period, an average of about 7 tons of gold per year came to Rome from Transylvania, Austria, and Spain.
Properties of the Element Gold:
The element gold has a crystal surface. The Brinell hardness number of the cubic form of gold is 18.5. If gold is obtained by evaporation or precipitation methods, some changes in its color occur. These colors can be red and purple. It will turn into powder. It is known that the element gold has 18 isotopes. It is the element with a single natural isotope with a mass number of 197 indicated in the periodic table. At the same time, the mass numbers of artificial isotopes are listed as 177-179-181 and 185-196. In addition to these, this precious element is also a very good conductor of electricity and heat. It has the property of being easily and well drawn and hammered. It has two oxidation states, +1 and +3. It is extremely resistant to all chemical effects. For this reason, it has been given the title "king of metals". It is never affected by room temperature. It has a very good relationship with acids. The only acid that can dissolve gold is called aqua regia. All halogens in the periodic table can affect the king of metals. Every gold compound created by scientists is sensitive to light. When exposed to light, it decomposes, revealing a metallic gold. The purple colloidal gold solution is called Cassius purple. The symbol for the element gold is Au. Its atomic number, according to the periodic table, is 79. Its specific gravity is 196.966569. Gold, a transition metal, exists in a solid state and is yellow in color. Gold is found in nature in its elemental form. The first gold was found in California in 1849. The countries with the most important gold deposits include America, Australia, and Canada.
