Thallium consists of 29.5%TI-203 and 70.5%TI-205. What is the relative atomic mass of thallium?

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27-04-2016
Physics

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Thallium consists of 29.5%TI-203 and 70.5%TI-205. What is the relative atomic mass of thallium?

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taskmasters taskmasters · Answer 1 · 2016-05-09T07:41:33+02:00

taskmasters taskmasters

09-05-2016

Since you are referring to the TI-203 and TI-205, you need to know the actual masses of these two isotopes. TI-203 has 202.9723 amu and TI-205 has 204.9744 amu. Since you are concluding that this Thallium have 29.5% (Ti-203) and 70.5% (Ti-205), you need to multiply the percentage to the actual masses of the isotopes. With that, you should be able to get 204.3833 amu

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