scottclauda87
scottclauda87 scottclauda87
  • 11-02-2021
  • Chemistry
contestada

What is the atomic mass of an atom that contains 28 protons, 28 electrons, and 30 neutrons?
86
28
58
56

Respuesta :

josephbonkena
josephbonkena josephbonkena
  • 11-02-2021
you add (only) the protons and neutrons, so the answer here is 58
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