Which are isotopes? An atom that has an atomic number of 55 and a mass number of 133 is an isotope of an atom that has: an atomic number of 54 and a mass number of 133. 78 protons and 55 neutrons. an atomic number of 133 and a mass number of 78. 79 neutrons and 55 protons.
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An atom's atomic number represents the number of protons it has. So, an atom with an atomic number of 55 has 55 protons. Show more…
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Choose the answer below that gives the correct number of protons, neutrons, and electrons in one ion of the designated isotope. An atom of the isotope 119Sn2+ contains 50 protons, 119 neutrons, and 52 electrons. An atom of the isotope 80Se2- contains 34 protons, 46 neutrons, and 32 electrons. An atom of the isotope 107Ag+ contains 107 protons, 154 neutrons, and 1 electron. An atom of the isotope 7Li+ contains 7 protons, 3 neutrons, and -1 electrons. An atom of the isotope 19F- contains 9 protons, 10 neutrons, and 10 electrons.
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an isotope that has the atomic number 53, atomic mass 127 and a charge of "-1" determine the number of protons neutrons and electrons
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