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Suppose that the radioactive isotope 223/87 Fr decays and becomes 223/88 Ra. What was emitted ? 1. A gamma-ray photon 2. An x-ray photon 3.
Suppose that the radioactive isotope 223/87 Fr decays and becomes 223/88 Ra. What was emitted ?
1. A gamma-ray photon
2. An x-ray photon
3. An alpha particle
4. A positron
5. An electron
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