camila4143 camila4143
  • 13-05-2022
  • Chemistry
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What does the number at the end of an element mean? (For example, Hydrogen-3)

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nevinjiju2011
nevinjiju2011 nevinjiju2011
  • 13-05-2022

Answer:

The top number is the total mass number, particles in an atom of an element that have mass are protons and neutrons.

Explanation:

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