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28 November, 12:14

Which of the following elements has the highest atomic mass?

A) Helium: 2 protons and 2 neutrons

B) Nitrogen: 7 protons and 7 neutrons

C) Oxygen: 8 protons and 8 neutrons

D) Hydrogen: 1 proton and no neutrons

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Answers (2)
  1. 28 November, 14:43
    0
    I think is C

    I hope it’s correct
  2. 28 November, 15:32
    0
    I think its A but I'm not sure.
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