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10 Cards in this Set
- Front
- Back
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radioactive dacay
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the amount of time it takes for 1/2 of a group of nuclei to undergo radioactive change
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alpha decay
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takes away 2 protons and 2 neutrons from the nucleus
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beta decay
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changes a neutron to a proton in the nucleus
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gamma rays
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highly penetrating electromagnetic rays
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Alpha rays
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highly ionizing no penetration
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Beta rays
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In between alpha and gamma
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orbital
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an energy level that can be inhabited by up to 2 electrons
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valence electrons
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extra electrons in an unfilled energy level
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element with the most ionization energy
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helium
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element with largest atomic radius
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francium
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