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Which element above has 8 protons in its nucleus? a. oxygen b. carbon c. phosphorus d. sulfur

Which element above has 8 protons in its nucleus? a. oxygen b. carbon c. phosphorus d. sulfur
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1 vote
Which element above has 8 protons in its nucleus?

a. oxygen
b. carbon
c. phosphorus
d. sulfur

User Undo
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2 Answers

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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.
User Mickeal
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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.
User Alexander Lucas
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