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5 Cards in this Set
- Front
- Back
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Isotopes
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Atoms of the same element (same number of protons) w/ different number of neutrons
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Atomic number
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= number of protons = number of electrons
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Mass number
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= number of protons + number of neutrons
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Mass number - number of protons =
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= number of neutrons
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Mass number over atomic number
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how to write symbol?
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