Atoms and Period Table Quiz
found on the periodic table? a. the atomic number of each element b. the symbol of each element. c. the density of each element d. the atomic mass of each element. An atom of gold with 79 protons, 79 electrons, and 118 neutrons would have a mass number of . a. 39 b. 158 c. 197 d. 276. On the periodic table, a horizontal row is called ................
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