Thallium is a chemical element with symbol Tl and atomic number 81. This soft gray post-transition metal is not found free in nature. When isolated, it resembles tin ...
Get the facts about thallium poisoning side effects, health risks and toxicity testing. Learn the metal's characteristic, uses and where it is naturally found.
Thallium and its compounds are often highly toxic.  Contact with skin is dangerous, and adequate ventilation should be provided when melting this metal. 
thallium [thal´e-um] a chemical element, atomic number 81, atomic weight 204.37, symbol Tl. (See Appendix 6.) Its salts are active poisons that may cause alopecia ...
Thallium (chemical symbol Tl, atomic number 81) is a soft, malleable metal. When freshly cut, it looks like tin, but it discolors to gray when exposed to air.
Thallium (Tl), chemical element, metal of main Group 13 (IIIa, or boron group) of the periodic table, poisonous and of limited commercial value. Like lead, thallium ...
Thallium's properties, discovery, videos, images, states, energies, appearance and characteristics.
noun, Chemistry. 1. a soft, malleable, rare, bluish-white metallic element: used in the manufacture of alloys and, in the form of its salts, in rodenticides. Symbol ...
What's in a name? From the Greek word for a green shoot or twig, thallos. Say what? Thallium is pronounced as THAL-ee-em. History and Uses: Thallium was discovered ...
Thallium has 25 isotopes which have atomic masses that range from 184 to 210. 203 Tl and 205 Tl are the only stable isotopes and 204 Tl is the most stable ...