mkmontana
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  • 03-02-2021
  • Chemistry
contestada

The mass number of an atom is determined by ___.

1.adding the protons and electrons
2.adding the protons and neutrons
3.adding the electrons and neutrons
4. adding the protons,electrons and neutrons

Respuesta :

00059196
00059196 00059196
  • 03-02-2021

Answer:

2

Explanation:

Answer Link

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