emmasofiaortiz emmasofiaortiz
  • 30-10-2020
  • Chemistry
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An atom of potassium has 19 protons and 20 neutrons. Its mass number is

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ponnusaarus
ponnusaarus ponnusaarus
  • 08-11-2020

Answer:

the mass no. is 39.0983 that is... 40

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