What is the bismuth of bismuth telluride
Bismuth, A metallic element with the element symbol Bi and atomic number 83, is located in group V A of the sixth cycle of the periodic table. The bismuth is a silver-white to pink metal that is brittle and easily crushed. Bismuth occurs in nature as free metals and minerals. Bismuth was previously considered the most stable element with the highest relative atomic mass. Still, in 2003, bismuth was found to be highly weakly radioactive, and its half-life was determined to be 1.9×1019 years. This means that bismuth probably didn't decay visibly until after humans died. According to the United States Geological Survey, global bismuth reserves are 330,000 tons, slightly less than silver's 400,000 tons. Bismuth reserves in China rank first in the world. There are more than 70 bismuth mines in China. There are six large and medium-sized bismuth mines with more than 10,000 tons of bismuth reserves, accounting for 78% of the total reserves in China, and two large mines with more than 50,000 tons of bismuth reserves, accounting for 66% of the total reserves in China. The bismuth resources in China are distributed in 13 provinces, municipalities, and autonomous regions, among which Hunan, Guangdong, and Jiangxi have the largest reserves, accounting for about 85% of the total reserves in China. It was followed by Yunnan, Inner Mongolia, Fujian, Guangxi, and Gansu provinces. Pure bismuth is a soft metal that is brittle when not pure. Stable at room temperature. The main ores are bismuthite (Bi2S3) and bismuthite (Bi2O5). Liquid bismuth expands when it solidifies. Brittle electrical and thermal conductivity is poor. The selenides and tellurides of bismuth have semiconductor properties. Metallic bismuth is a silvery-white (pink) to yellowish metal, brittle and easily crushed; At room temperature, bismuth does not react with oxygen or water and is stable in air. Poor electrical and thermal conductivity; Bismuth was previously considered the most stable element with the highest relative atomic mass. However, in 2003, bismuth was discovered to be weakly radioactive and can undergo alpha decay to thallium-205. Its half-life is around 1.9X1019 years, a billion times the universe's age. If you are looking for high quality, high purity and cost-effective bismuth telluride, or if you require the latest price of bismuth telluride, please feel free to email contact mis-asia.