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lillui
lillui lillui
  • 08-09-2016
  • Physics
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What is the mass number of a potassium atom that has 20 neutrons

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Victoria2020
Victoria2020 Victoria2020
  • 08-09-2016

The mass of potassium is 39. This is obtained by adding the 19 protons and 20 neutrons found inside the nucleus


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