Question

what is meant by atomic mass number ? explain how the atomic number and mass number of carbon are 6 and 12 respectuvely

Answer 1

Carbon-12 is one of the most abundant isotopes with 6 protons and 6 neutrons therefore mass number would be 12. C-13 is another isotope of carbon which contains 6 protons and 7neutrons therefore the mass number would be 13.'' Atomic number: The number of protons in an atom.