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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!

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17y ago

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Related Questions

What is the formula for thallium carbonate?

The formula for thallium carbonate is Tl2CO3, which consists of two thallium (Tl) atoms and one carbonate (CO3) ion.


How many shells are in thallium?

Thallium has 6 electron shells.


How many electrons will thallium has in its outermost shell?

thallium has 3 electrons in outermost shell.


How many protons does thallium-201 have?

Thallium-201 has 81 protons. This is because the number of protons in an atom is equal to its atomic number, and thallium has an atomic number of 81.


What element has 81 proton in the nuclei of its atoms?

A. Lead B. Platinum C. Thallium D. Uranium


Why is 81 the answer to how many protons and neutrons in a thallium atom?

The atomic number of thallium (Tl) is 81, which represents the number of protons in the nucleus. Since thallium is a stable element, the number of protons and neutrons in its nucleus should be equal. Therefore, the number of neutrons in a thallium atom is also 81.


What is the composition of thallium?

The most stable isotope of thallium is thallium-205, which has 81 protons and 124 neutrons. Thallium in its elemental form is a soft, malleable, heavy metal that is typically found in nature combined with other elements.


What does thallium smell like?

Thallium is a heavy metal that is known to be odorless. There is no distinct smell associated with thallium.


If thallium has an oxidation number of 1 what is the formula for thallium carbonate?

Thallium has an oxidation number of +1. Therefore, the formula for thallium carbonate would be Tl2CO3.


What is the half life of thallium 203?

Thallium 203 in my reference is stable. Thallium has many isotopes from Tl184 (11 sec half life) to Tl210 (1.30 min).


How many covalent bonds can Indium form?

It'll behave the same way as Aluminum, Gallium and Thallium do.


Whats the atomic mass of thallium 203 and thallium 205?

the overall atomic mass is 204.37, but for thallium 203 it is 203, and for thallium 205, it is 205.