The spontaneous emission of radiation from the nucleus of an atom

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Centre of an atom; contains all positive charge and most of the mass (protons and neutrons)

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In the nucleus, has a charge of +1; stable when outside the nucleus

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Uncharged subatomic partible in nucleus of an atom, similar in mass of a proton

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Same element, different mass number

Has the same # protons, but different # of neutrons

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What is emitted from an unstable nucleus to try to stablize it.       For ex. alpha, beta and gamma decay

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The nucleus that produces a daughter nucleus as a result of radioactive decay.

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Daughter nucleus

Product of a parent nucleus after radioactive decay

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Consists of 2 protons, 2 neutrons emitted during alpha decay of a radioactive atom.

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