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An atom of oxygen (atomic number 8) with an atomic mass of 16 would have how many neutrons?

User Rinu
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It would have 8 neutrons. Since the atomic number = the number of protons in the atom, oxygen has 8 protons. If the atomic mass is made up of protons and neutrons, then it would have 8 neutrons as well (8+8=16)
User David Nix
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