bismuut

Bismuut is a chemical element with the symbol Bi and atomic number 83. It is a post-transition metal that is dense, brittle, and lustrous. Bismuut is a silvery-white metal, but it can also appear pinkish due to oxidation. It is one of the most diamagnetic elements, meaning it is repelled by a magnetic field. Bismuut is also known for its low thermal conductivity and high electrical resistance.

The element bismuut occurs naturally in the Earth's crust, though it is relatively rare. It is often found in association with other metals like lead, copper, tin, and silver. Bismuut can be extracted from ores such as bismutinite and bismutite. In its pure form, it is a soft metal that can be easily ground into a powder.

Historically, bismuut compounds have been used for medicinal purposes, particularly for treating digestive issues. Today, its primary uses are in alloys, cosmetics, and pigments. Bismuut alloys are often used in low-melting-point solders, fire sprinklers, and fuses due to their ability to melt at relatively low temperatures. In cosmetics, bismuut oxychloride is used to create pearlescent effects in makeup. Bismuut compounds are also used as pigments in paints and ceramics. Bismuut is considered a non-toxic metal, unlike many other heavy metals, making it a safer alternative in various applications.