aramirez3454arami
aramirez3454arami aramirez3454arami
  • 18-10-2016
  • Geography
contestada

What is the mass number of an atom with 5 protons and 7 neutrons?

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MichaelJustice
MichaelJustice MichaelJustice
  • 18-10-2016
12 is the correct answer
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