ryleighsavoy173 ryleighsavoy173
  • 22-09-2017
  • Chemistry
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How many protons (p) and neutrons (n) are in an atom of magnesium-26?

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E3nigma
E3nigma E3nigma
  • 26-09-2017
Well first of all, we know that the atomic mass of magnesium is 26 due to the fact that it is stated. We can then go to the periodic table and find the atomic number of magnesium, which is 12. We then subtract, 26 - 12 = 14. 

Protons - 12
Neutrons - 14
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