Question How is the atomic weight of an element determined? The mass… Image transcription text7. How is the atomic weight of an element determined? The mass contribution of the isotopes of an elementaccording to their abundance is called the atomic weight of the element. Isotopes are identified by their massnumber, which is the sum of the number of protons and neutrons in the nucleus…. Show more Social Science Sociology Share QuestionEmailCopy link This question was created from Chap 8 Sontavia Washington.docx .doc Comments (0)