autu

Autu, also known as Au2, is a chemical element with the symbol Au and atomic number 79. It is a soft, lustrous, yellow metal that is dense, malleable, and ductile. Autu is one of the least reactive chemical elements and is solid under standard conditions. It is a member of the group 11 elements in the periodic table, alongside silver and copper, and shares their characteristic electronic configurations.

Autu is renowned for its distinctive color and resistance to corrosion and tarnish. These properties have made it highly valued throughout history for ornamentation, coinage, and jewelry. Its high electrical conductivity and ability to form alloys with other metals also contribute to its use in electronics and dentistry.

The element is found in a relatively pure form in nature, often as nuggets or grains in alluvial deposits and veins. It is also extracted from ores through various mining and refining processes. Autu is a rare element, with global production limited. Its scarcity and desirability have led to its use as a precious metal and a store of value. In terms of chemical behavior, autu is relatively inert, resisting most acids. However, it can be dissolved by aqua regia, a mixture of nitric and hydrochloric acids.