4 thoughts on “Gold ingredients and chemical symbols”
Debbie
Element name: Gold (GOLD) Chemical Element Symbol: AU CAS Number: 7440-57-5 [1] Metal density: 19.3 g/cm3; Bi heat capacity: 0.13 kj/(kg · k) atom order: 79 nuclear charge number: 79 79 Nuclear electrical number: 79 Common oxidation numbers: 1, 3 atomic radius: 134 m ionic radius: 137 m3 ionic radius: 85 m (gas) Water-integrated heat: -644 lift heat: 385 atom volume: (cubic centimeter/Moore ): The content of 10.2 Elements in the sun: 0.000001 ‰ Elements in the seawater content: 0.0000000001 ‰ Cruise content: 0.000011 ‰ oxidation state: MAINAU 3 Otherau-1, AU0, AU 2, AU 5, AU 5 , AU 7 oxide, molecular AU₂O3, molecular AU₂O3, molecular molecular molecular formula is AU₂O3 · 3H₂O; molecular weight 495.98; gold content 77.0%; appearance brown powder; storage method: dry sealing and storage. Chemical characteristics: Release oxygen when heating release oxygen. , Generate single -quality gold. 2AU 单O3 = 4AU 3O₂ ↑ System: High temperature heating hydroxide gold can be made. 2AU (OH) 3 = AU₂O3 3H₂O It's 79.
The monocular (free state form) of gold is commonly referred to as gold. It is a popular precious metal. It has been used for currency, value preservation and jewelry for many centuries. In nature, gold appears in the golden blocks or golden grains, underground ore veins and accumulation layers in the rock. Gold is also one of the currency metals. The single quality of the gold is solid at room temperature, with high density, softness, light, and corrosion resistance. Their exhibition and delay are the highest in known metal.
Gold is a transition metal that can form three -valent and unit price positive ions after dissolving. Most of the chemicals and most chemicals will cause chemical reactions, but can be eroded by chlorine, fluorine, king water and cyanide. Gold can be dissolved by mercury to form mercury (but this is not a chemical reaction); nitric acid that can dissolve silver and cheap metals cannot dissolve gold. The above two natures have become the basis of gold refining technology, which are called "silver division gold method" () and "parting".
Gold (GOLD) is a single form of chemical element gold (chemical element symbol AU). It is a soft, golden, corrosive precious metal. Gold is one of the rare, precious and extremely valued metals. The international gold is generally based on ounces. In ancient China, "two" was used as a gold unit, and it was a very important metal. It is not only a special currency for reserves and investment, but also an important material for the jewelry, electronics, modern communications, aerospace and air industry and other departments. The chemical symbols of gold are AU, and the English code in finance is XAU or GOLD. The name of the AU comes from a story of Aurora, a goddess of dawn in Roman mythology, means shining dawn.
Element name: Gold (GOLD) Chemical Element Symbol: AU CAS Number: 7440-57-5 [1] Metal density: 19.3 g/cm3; Bi heat capacity: 0.13 kj/(kg · k) atom order: 79 nuclear charge number: 79 79 Nuclear electrical number: 79 Common oxidation numbers: 1, 3 atomic radius: 134 m ionic radius: 137 m3 ionic radius: 85 m (gas) Water-integrated heat: -644 lift heat: 385 atom volume: (cubic centimeter/Moore ): The content of 10.2 Elements in the sun: 0.000001 ‰ Elements in the seawater content: 0.0000000001 ‰ Cruise content: 0.000011 ‰ oxidation state: MAINAU 3 Otherau-1, AU0, AU 2, AU 5, AU 5 , AU 7 oxide, molecular AU₂O3, molecular AU₂O3, molecular molecular molecular formula is AU₂O3 · 3H₂O; molecular weight 495.98; gold content 77.0%; appearance brown powder; storage method: dry sealing and storage. Chemical characteristics: Release oxygen when heating release oxygen. , Generate single -quality gold. 2AU 单O3 = 4AU 3O₂ ↑ System: High temperature heating hydroxide gold can be made. 2AU (OH) 3 = AU₂O3 3H₂O
It's 79.
The monocular (free state form) of gold is commonly referred to as gold. It is a popular precious metal. It has been used for currency, value preservation and jewelry for many centuries. In nature, gold appears in the golden blocks or golden grains, underground ore veins and accumulation layers in the rock. Gold is also one of the currency metals. The single quality of the gold is solid at room temperature, with high density, softness, light, and corrosion resistance. Their exhibition and delay are the highest in known metal.
Gold is a transition metal that can form three -valent and unit price positive ions after dissolving. Most of the chemicals and most chemicals will cause chemical reactions, but can be eroded by chlorine, fluorine, king water and cyanide. Gold can be dissolved by mercury to form mercury (but this is not a chemical reaction); nitric acid that can dissolve silver and cheap metals cannot dissolve gold. The above two natures have become the basis of gold refining technology, which are called "silver division gold method" () and "parting".
The separation and ingredients of eight precious metals (11/15)
1. Thousands of gold
refers to gold jewelry with a amount of 99.9%of the metal, engraved with 999 or thousand -footed gold seal.
n n n n n n n n n n n n n R n 2. Foot gold
The gold jewelry with a gold content of 99%, engraved with 99%or foot gold.
3.18k gold
refers to jewelry containing 75%gold ingredients, and the remaining 25%are other precious metals, engraved with 18K or 750 marks.
4. White 18K gold
The ingredients, the color of the white gold jewelry, the remaining 25%are other metals, engraved with 18K or 750 marks.
5.pt900
%Are other precious metals, platinum content with a platinum content of 900%, and the mark is PT900.
6.pt950
Thenic accessories containing 95%platinum ingredients, the remaining 5%are other precious metals, and the mark is PT950.
7. Foot silver
refers to silver jewelry with a silver content of 99%, engraved with 99 or foot silver prints.
n 8.925 silver
naip refers to jewelry containing 92.5%silver ingredients, and the remaining 7.5%are other precious metals, engraved with 925 marks
AU
Gold (GOLD) is a single form of chemical element gold (chemical element symbol AU). It is a soft, golden, corrosive precious metal. Gold is one of the rare, precious and extremely valued metals.
The international gold is generally based on ounces. In ancient China, "two" was used as a gold unit, and it was a very important metal. It is not only a special currency for reserves and investment, but also an important material for the jewelry, electronics, modern communications, aerospace and air industry and other departments.
The chemical symbols of gold are AU, and the English code in finance is XAU or GOLD. The name of the AU comes from a story of Aurora, a goddess of dawn in Roman mythology, means shining dawn.