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As a magnesium alloy, a small quantity of thorium can be used for its. hardening and lightweight properties, making it ideal for the aerospace industry.1 One problem. with thorium is its mildly radioactive nature, producing concerns over its safety and potential. harmful effects.
1 It is also used in the production of mirrors. 2  A mixture of gallium, indium, and tin (called Galinstan) is now used in many medical thermometers. 3  This has replaced the traditional mercury thermometers that can be hazardous. 4  Current research to replace mercury with gallium in dental fillings is ongoing.ses of gallium. 1  The main use of gallium is in semiconductors where it is commonly used in microwave circuitry and in some infrared applications. 2  Gallium was used in nuclear weapons to help stabilize the plutonium for machining. 3  It can be used inside a telescope to help find neutrinos. 4  Gallium is used as a component of a certain type of solar 5  ... I