buy wholesale jewelry to sell What kind of substance does gold contain

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buy wholesale jewelry to sell

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  1. Kyle

    designer jewelry copies wholesale Gold GOLD678, gold (transition metal), gold code is xAU_USD, xau is a chemical element code crystal structure: Face -hearted cube structure

    Atomics: 196.96654
    n n n n n n n n n n n n n n n R N Shell structure: 2,8,18,32,18,18,1

    Electronic discharge: [XE] 4F14 5D10 6S1

    Hylined price: 1,3

    melting point: 1064.43 ℃
    r
    boiling point: 2808 ℃

    n n Electricity: 2.54

    Colonal price radius: 1.34a

    n gold Gold Bar

    ionic radius: 0.85 ( 3) A

    Atomic radius: 1.79a

    Atomic volume: 10.2cc/mol

    n

    otoxic state: (3), 1

    293k: 19.32g/cc
    n
    Big heating: 0.128j/gk

    Volt heat: 334.4kj/mol

    R n
    Caid rate: 0.452x10^6/cm · ω

    Coefficient: 78.3 X10E3 MPA

    n

    Mohs hardness: 2.5

    The chemical properties of gold are stable and have strong corrosion resistance. Oxidation, insoluble in strong acids such as a single hydrochloric acid, nitric acid, sulfuric acid, and only dissolved in the mixed acid of hydrochloric acid and nitric acid (ie, king water) to form chlorogenic acid H [AUCL4]; The solution of potassium or sodium cyanide forms a stable complex M [AU (CN) 2]; gold can also be dissolved in a solution with sulfur pyrine; it is also dissolved in an acidic solution with chlorine. Gold does not work with alkali solution, but it can be generated with sodium peroxide when melting. The combined price of gold is -1, -2, 1, 2, 3, 5, 7, etc. Oxide has a triple oxidation two gold AU2O3, and chloride has a three-chloride gold AUCL3. rnrnrn 在酸性介质中，氯金酸H[AuCl4]或络合物M[Au(CN)2]可被金属锌（锌粉或锌丝）、亚硫酸钠、 Waterfalls are restored as single -quality gold powder. The sulfide of alkaline metal will corrode gold and generate soluble sulfide gold. Exic acids in the soil and metabolites of certain bacteria can also dissolve trace gold.

    This has a high power of gold. It is difficult to lose the outer electrons into positive ions, and it is not easy to accept electrons into anion. Its chemical properties are stable and the affinity with other elements is weak. Therefore, most of the natural gold state exists in nature.

    The average content of gold in the crust is about 1.1 million % (0.0011ppm), and the content in the seawater is about 100 billion % (0.00001ppm). The crust movement and geological changes from hundreds of millions of years to billions of years make gold elements rich into gold mines. The gold ore with general industrial value is 2-3 grams/ton, and the rich ore has 5-50 grams/ton. 50-500 grams/ton, as well as gold, the smallest single piece, the largest tens of kilograms, the rare large block of gold hundreds of kilograms, because of some dog head, commonly known as dog head gold, Indian scientists have discovered it. Two pieces of nearly 2.5 tons of dog head gold; poor ore at 0.1-1 grams/ton, and the level of metallurgical technology is 0.5 grams/ton or more. It has industrial mining value.

    has very few pure gold in nature. The above are called silver gold ore, more than 20%of copper-containing copper, and 5-11%of those with 5-11%are called 钯 矿 矿 钯 钯 以 以 以 以 以 以 以 以 铋 铋 铋 铋 铋 铋 矿 矿 以 以 以 以 以 以 以 以 以 以.

    The gold has sulfur, which is often close to sulfide such as pyroneite, poison sand, square lead ore, and 锑 锑 ore; Elements form metal intermodes.

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