Chemistry, 26.10.2020 17:20 taminazaka1

A certain element has three isotopes. 92.2% has a mass number of 27.98, 4.68% has a mass of 28.98, and 3.09% has a mass of 29.97. The average atomic mass of the element is amu, and the element is .

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A certain element has three isotopes. 92.2% has a mass number of 27.98, 4.68% has a mass of 28.98, a...

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