Physics, 01.08.2019 08:30, wiljoystoltz253

1. an element's atomic number is the a. sum of the protons and neutrons in an atom. b. number of protons in an atom's nucleus. c. mass of the atom. d. weight of the atom.

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1. an element's atomic number is the a. sum of the protons and neutrons in an atom. b. number of pro...