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an element's atomic number is the A. mass of the atom B. number of the protons in an atom's nucleus C. weight of the atom D. sum of the protons and neutrons in an atom
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an element's atomic number is the A. mass of the atom B. number of the protons in an atom's nucleus C. weight of the atom D. sum of the protons and neutrons in an atom

User Jeff Day
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2 Answers

1 vote

Yup.. thats B alright.

User ZzZombo
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3 votes
the answer is letter B, the number of protons!
User Ftaveras
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