Question

what is the mass number of A and B​

Answer 1

Answer:

write the full question please

Answer 2

Answer:

Since protons and neutrons are both baryons, the mass number A is identical with the baryon number B of the nucleus

Alternative Titles: atomic mass number, nucleon number. Mass number, in nuclear physics, the sum of the numbers of protons and neutrons present in the nucleus of an atom.

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