Tamilnadu BoardEnglish MediumSTD 7ScienceT1 CH4 Atomic Structure2 Marks
Question
what is atomic mass number? mention its formula.
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Answer
Atomic mass number (A) is equal to the sum of the number of protons(p) and neutrons (n) in the nucleus. Atomic mass or mass number = Number of Protons + Number of Neutrons
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