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7 Cards in this Set
- Front
- Back
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Neutrons
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neutralcharged in nucleus
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Electrons
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negatively charged protons arranged in energy levels
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Protons
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positive charge particles in nucleus
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Isotopes
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atoms of the same element that differ by there mass #
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Mass #
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sum of neutron and protons
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Atomic #
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protons in nucleus of atom sam as # of protons
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Atomic Mass
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average mass of all isotopes in element
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