jjepsen1 jjepsen1
  • 20-09-2020
  • Chemistry
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construct
an isotope has 17 protons 20 neutrons and 18 electrons

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francineex0o francineex0o
  • 20-09-2020
Add proton + neutrons = Mass 37

Proton is same as your atomic mass= 17

If you go on the periodic table look up 17 and it will give u the letter.
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