Chemistry, 08.12.2019 17:31 brebob3339
2. an element's atomic number is the a. number of protons in an atom's nucleus. b. mass of the atom. c. weight of the atom. d. sum of the protons and neutrons in an atom.
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2. an element's atomic number is the a. number of protons in an atom's nucleus. b. mass of the atom....
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