Bismuth is a silver-white to pink metal, brittle and easily crushed, and its chemical properties are relatively stable. Bismuth exists in the form of free metals and minerals in nature. In the past, bismuth was considered to be the most stable element with the largest relative atomic mass, but in 2003, it was discovered that bismuth has extremely weak radioactivity.
As a "green metal" that can be used safely, bismuth is currently not only used in the pharmaceutical industry, but also widely used in semiconductors, superconductors, flame retardants, pigments, cosmetics and other fields. It is expected to replace toxic lead, antimony, cadmium and mercury. In addition, bismuth is the metal with the strongest diamagnetism. Under the action of a magnetic field, the resistivity increases while the thermal conductivity decreases. It also has good application prospects in thermoelectric and superconductivity.
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