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1 January, 07:45

Which element above has 8 protons in its nucleus?

a. oxygen

b. carbon

c. phosphorus

d. sulfur

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Answers (2)
  1. 1 January, 08:02
    0
    A. Oxygen. Oxygen has an atomic mass of 16. The atomic mass of an atom is the combined weight o the protons and neutrons. Since Oxygen's atomic mass is 16, it has 8 protons and 8 neutrons.
  2. 1 January, 08:10
    0
    Oxygen, you cannot judge an elements number of protons by its atomic mass, but by the atomic number. the atomic number is 8, thus 8 protons.
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