Nuclear Radioactivity

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Last updated 6:09 PM on 4/28/26
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5 Terms

1
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Alpha decay (α)

  • Ejection of helium

<ul><li><p>Ejection of helium</p></li></ul><p></p>
2
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Beta decay (β-)

  • Ejection of an electron

  • N → P + e-

<ul><li><p>Ejection of an electron</p></li><li><p>N → P + e<sup>-</sup></p></li></ul><p></p>
3
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Gamma decay (γ)

No mass change

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Positron decay (β+)

  • Ejection of a positron (positive electron)

  • P → N + e+

<ul><li><p>Ejection of a positron (positive electron)</p></li><li><p>P → N + e<sup>+</sup></p></li></ul><p></p>
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Electron capture

  • Electron is brought into the nucleus, creating a hole

  • P + e- → N

<ul><li><p>Electron is brought into the nucleus, creating a hole</p></li><li><p>P + e<sup>-</sup> → N</p></li></ul><p></p>