Gold ingot
Main purposes: Gold ingot is mainly used as a monetary store, jewelry, and other decorations in the electronic aviation industry, the gold can be used as surface coatings and solder, precision instruments, other pieces or coatings, electronic equipment, contacts and so on.
Traits: a strong metallic luster, oxidation, corrosion-resistant. Proportion of 19.3.
Gold is a actinic aspect with the attribute Au (from Latin: aurum “gold”) and an diminutive amount of 79. Gold is a dense, soft, shiny, adaptable and adaptable metal. Pure gold has a ablaze chicken blush and afterglow frequently advised attractive, which it maintains after acerbic in air or water. Chemically, gold is a alteration metal and a accumulation 11 element. It is one of the atomic acknowledging actinic elements solid beneath accepted conditions. The metal accordingly occurs generally in chargeless basal (native) form, as nuggets or grains in rocks, in veins and in alluvial deposits. Less commonly, it occurs in minerals as gold compounds, usually with tellurium.
Gold resists attacks by alone acids, but it can be attenuated by the aqua regia (nitro-hydrochloric acid), so called because it dissolves gold. Gold aswell dissolves in acrid solutions of cyanide, which accept been acclimated in mining. Gold dissolves in mercury, basic admixture alloys. Gold is baffling in nitric acid, which dissolves argent and abject metals, a acreage that has continued been acclimated to affirm the attendance of gold in items, giving acceleration to the appellation the acerbic test.
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