| Atoms – Constituent Parts III |
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| • | # of protons and # of neutrons determines mass |
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| and nuclear properties |
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| – | Same
element (same Z) but different # of neutrons |
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| isotope of same element |
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| – | Isotopes
behave same chemically, but have different |
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| nuclear
properties |
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| – | 1H = 1
proton, 0 neutrons (regular hydrogen) |
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| – | 2H = 1
proton, 1 neutron (deuterium) |
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| – | 3H = 1
proton, 2 neutrons (tritium) |
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| – | 4He= 2 protons, 2 neutrons (regular helium) |
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| – | 12C = 6 protons, 6 neutrons (regular carbon) 14C = ??? |
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