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Protons, Neutrons, and Electrons Practice Worksheet

Mass Number Atomic Number Protons Neutrons Electrons Boron B 11 5 5 6 5 Sodium 24 11 Y 89 39 Copper 29 35 Tc 98 43 Pb 207 Thallium 204 81 H 0 C arbon 12 N 7 Ba 56 Calcium Si 14 A rgon 18 Mg 12 12 . Oxygen 15.999 . Title: Protons, Neutrons, and Electrons Practice Worksheet ...