Au - Gold

Atomic Number: 79 Period Number: 6 Group Number:11

Gold is a shiny, soft and dense metal. It has been known for thousands of years. Gold is one of the most unreactive elements in nature and always keep stable at standard conditions. It reacts with neither nitrate nor sulfuric acid.

Gold is widely used in the areas of Jewelry, medicine, industry and electronics. Because it has good electricity and heat conductivity and keep stable when it is exposed to the air, so it can be used to make electrical connectors and printed circuit boards. Gold alloy is also used to add strength of gold and modify its characteristics.

Auric Chloride ( AuCl₃) is the most common compound of gold. It plays an important role in organic synthesis.

Physical and Chemical properties:

Atomic Weight: 196.966569

Melting Point: 1337.33 K

Boiling Point: 3129 K

Density: 19.282 g/cm³

Phase at Room Temperature: Solid

Element Classification: Metal

Ionization Energy: 9.226 eV

Oxidation States: +3, +1