BiancaAviles2000
BiancaAviles2000 BiancaAviles2000
  • 01-03-2017
  • Physics
contestada

The mass number is used to calculate the number of

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laytonjacob09
laytonjacob09 laytonjacob09
  • 01-03-2017
atomic number is the answer
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Аноним Аноним
  • 01-03-2017
The atomic mass of an element is the total number of protons and neutrons in the nucleus of the atom. 

Hoped this helped 
Happy Studying
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