Chemistry, 27.03.2021 03:10 pennygillbert

There are equal atoms of 20381Tl and 20581 Tl .Equal atoms of Superscript 203 Subscript; 81 Tl and Superscript 205 Subscript ; 81 Tl. There are_in a sample of thallium because the mass number of thallium, which is 204.38 a mu, is_the mass number of the isotope present in the highest percentage. In a sample of thallium because the mass number of thallium, which is 204.38 amu, is closer to.

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There are equal atoms of 20381Tl and 20581 Tl .Equal atoms of Superscript 203 Subscript; 81 Tl and S...