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Which of the following elements has the highest atomic mass?

1. Helium: 2 protons and 2 neutrons
2. Nitrogen: 7 protons and 7 neutrons
3. Oxygen: 8 protons and 8 neutrons
4. hydrogen: 1 proton and no neutrons

Respuesta :

Christiannicolas
Oxygen has the highest atomic mass out of these four elements.
kaylaharville1234

Answer:

Oxygen has the highest atomic mass out of all the four elements.

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