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How do mass number and proton number change in alpha decay?
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FlashcardPhysics · Radioactivity
SourcedHow do mass number and proton number change in alpha decay?
Serlo · “Radioaktivität” · CC BY-SA 4.0
„Wird ein solcher Helium-Kern ausgesandt, reduziert sich damit die Massenzahl des ursprünglichen Kerns um 4 und die Protonenanzahl um 2.“- TU Dresden
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How do mass number and proton number change in alpha decay?
SourcedWhen a helium nucleus is emitted, the mass number of the original nucleus decreases by 4 and the proton number by 2.
Wird ein solcher Helium-Kern ausgesandt, reduziert sich damit die Massenzahl des ursprünglichen Kerns um 4 und die Protonenanzahl um 2.
Serlo · “Radioaktivität”CC BY-SA 4.0
- 02
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Which particle leaves the nucleus in alpha decay?
- A helium nucleus of 2 protons and 2 neutronsCorrect answer
- An electron from the atomic shell
- A single proton
- A photon with no mass
- 03
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Explain why alpha decay lowers the mass number by 4 and the proton number by 2.
The nucleus emits an alpha particle, so it gets lighter …
HitParticle and balance are correct
GapName the helium nucleus (2 protons, 2 neutrons) explicitly
Write the decay equation for a specific nuclide
- 04
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I built Quanta because I don't trust a flashcard I can't verify. Since then, every flashcard carries its source.
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