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other metals
These elements are not part of any other category of metal; they are sometimes called posttransition metals.
polonium
Very rare radioactive metal that is used as fuel in nuclear reactors; it emits radiation that is much more powerful than that of uranium.
bismuth
Relatively rare metal that is used especially in alloys and cosmetics and in medicine (treatments for gastric ulcers and diarrhea).
lead
Heavy toxic metal that is used to prevent corrosion, as a protection against radiation and in accumulator batteries, paint and glass.
thallium
Metal that is used especially in infrared detectors and some kinds of glass.
tin
Metal that is used especially as an anticorrosive for copper and steel and as a component in the preparation of bronze, welding and toothpaste.
indium
Very rare metal that is used especially in race car engines and electronic devices, and as a coating for glass.
gallium
Rare metal that is used especially in high-temperature thermometers, electroluminescent diodes and television screens (the color green).
aluminum
Light metal that is used especially in aeronautics, cars, buildings, electric cables, kitchen utensils and packaging.