Thallium. Atomic number (Z) = 81
Thallium is an element on the periodic table. It's atomic number is 81.Because it is an element, I don't understand what you mean by "its formula".The symbol for Thallium is Tl, so the formula would be Tl...If you want the formula for a compound with thallium, that's a different story.It is not a diatomic element, if that's what you meant.For more information on thallium, go tohttp://en.wikipedia.org/wiki/Thallium
Thallium is a chemical element with symbol Tl and atomic number 81
boron (B), aluminum (Al), gallium (Ga), indium (In), thallium (Tl)
B (boron) apex
If you meant "element" as in a chemical element, there is no element with the symbol "ef" in the periodic table.
Tl is element 81 Thallium, a highly toxic poor metal.
thalium (Tl)
Thallium is a chemical element with symbol Tl and atomic number 81
Tl stands for thallium on the periodic table. Thallium is a chemical element with the atomic number 81.
The element in the sixth period in column 13 is tellurium, with symbol Tl.
Thallium. A group 13, (boron group) element.
TL on the periodic table is the chemical symbol for thallium. Thallium is a soft, malleable metal that is known for its toxicity. It is often used in electronics and as a component in high-temperature superconductors.
Thallium is a chemical element with symbol Tl and atomic number 81
The element with a mass of 204 is Mercury (Hg). Mercury is a heavy metal that is liquid at room temperature and commonly used in thermometers and fluorescent lights.
The atomic number of thallium (Tl) is 81.The atomic weight of Tl is 204.38 grams per mole.See the Web Links to the left of this answer for a periodic table with more information about this element!
The element with 82 protons is lead, and its chemical symbol is Pb. Lead is a heavy metal that is commonly found in the earth's crust and has various industrial applications.
TL = Talk Later