If you are using it for one of your Boy Scout requirements, see your handbook for a list of things you can teach. For most recent ILSC, our leader used making a paper airplane to demonstrate the EDGE method. What you teach should fit your audience and any requirement you are trying to fulfill. Reply.
Uses of Thallium. Thallium sulfate, which is odorless and colorless, was used as a rat poison and as an insecticide. This use has been discontinued in some countries, including the USA. Thallium sulfide is used in photocells because its electrical conductivity increases on exposure to infrared light.
Research activity with thallium is ongoing to develop high-temperature superconducting materials for such applications as magnetic resonance imaging, storage of magnetic energy, magnetic propulsion, and electric power generation and transmission.03 Tl and 205 Tl are the only stable isotopes, and 204 Tl is the most stable radioisotope, with a half-life of 3.78 years. 202 Tl (half-life 12.23 days) can be made in a cyclotron, while 204 Tl is made by the neutron activation of stable thallium in a nuclear reactor.