taylorzharne16 taylorzharne16
  • 21-10-2016
  • Chemistry
contestada

what is the number after an elements name, representing the sum of its protons and neutrons

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Аноним Аноним
  • 21-10-2016
the answer is electrons
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GutsnGlory
GutsnGlory GutsnGlory
  • 21-10-2016
The atomic mass number is what you are describing in your question.
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