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

11-02-2021

you add (only) the protons and neutrons, so the answer here is 58

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