What are two atoms called when they have the same atomic number, but a different mass number?, isomers, allotropes, alloforms, isotopes, The total number of protons and neutrons in the nucleus of an atom is its, atomic number., Avogadro number., mass number., average atomic mass., As the mass number of an element’s isotopes of an element increases, the number of protons, decreases., increases., remains the same., doubles each time the mass number increases., All atoms of the same element have the same, atomic mass., number of neutrons., mass number., atomic number., Atoms of the same element can differ in, chemical properties., mass number., atomic number., number of protons and electrons..
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Isotopes
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