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Chemistry, 24.12.2019 23:31 robert7248
1.what one factor identifies an atom as a specific element? . choices: the number of protons. the atomic mass. the number of neutrons. the mass number. . 2.an atom of fluorine has an atomic number of 9 and an atomic mass of 19. the atom contains . choices: 19 protons, 19 electrons, and 9 neutrons. 19 protons, 10 electrons, and 9 neutrons. 9 protons, 10 electrons, and 10 neutrons. 9 protons, 9 electrons, and 10 neutrons . . 3.experiments with cathode ray tubes led to a new model of the atom, sometimes called the \"plum pudding\" model, because of the discovery of the . choices: . electron. nucleus neutron. proton.
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