How to calculate the average atomic mass of an element if the percentage of its various isotopes are given? What is the formula?
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I think 1/12 mass of C12 isotope is the average mass of an element.
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The chlorine isotope with 18 neutrons has an abundance of 0.7577 and a mass number of 35 amu. To calculate the average atomic mass, multiply the fraction by the mass number for each isotope, then add them together.
Explanation:The atomic number of an element defines the element’s identity and signifies the number of protons in the nucleus of one atom. For example, the element hydrogen (the lightest element) will always have one proton in its nucleus. The element helium will always have two protons in its nucleus.
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