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Thallium, discovered in 1861, does occur naturally, but not in its pure form.

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10y ago

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What are the percent of the thallium two isotope?

Thallium has two stable isotopes: Tl-203 (29.5%) and Tl-205 (70.5%). The percentages represent the relative abundance of each isotope in naturally occurring thallium.


Is thalium man made?

Thallium is a naturally occurring element in the Earth's crust. It is not a man-made element.


The metal thallium occurs naturally as 30 percent thallium - 203 and 70 percent thallium - 205 calculate the atomic mass of thallium?

(203 x 0.30) = 60.9 (205 x 0.70) = 143.5 60.9 + 143.5 = 204.4 The answer is 204.4 amu !


What year was river lee built?

Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.


Metals occur naturally in what state?

in there native state


What element does not occur naturally on earth?

Astatine is an element that does not occur naturally in large quantities on Earth.


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.


How many different kinds of atom occur naturally on earth?

94 kinds of atoms occur naturally on earth


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.


Does thallium isotope contain iodine?

No, thallium isotopes do not contain iodine. Thallium isotopes are variants of the element thallium, while iodine is a separate element with its own isotopes.