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18-03-2016
Chemistry

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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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Willchemistry Willchemistry

18-03-2016

atomic mass :

29.5 * 203 + 70.5 * 205 / 100 =

5988.5 + 14452.5 / 100 =

20441 / 100 = 204.41 u

atomic mass of Thallium 204.41 u

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