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.
About Thallium. Thallium is the heaviest member of Group 13 on the periodic table, a family that consists of the post-transition âpoor metals.â The element is a metal that has a low melting point and is extremely malleable, soft enough to be cut with a knife.he Thallium atom has a radius of 170.pm and its Van der Waals radius is 196.pm. In its elemental form, CAS 7440-28-0, thallium has a silvery white appearance. Thallium was first discovered by Sir William Crookes in 1861 and gets its name from the Greek word thallos which means twig or green shoot.