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When Ra Decays by Emitting an Alpha Particle, What

question 44

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When When Ra decays by emitting an alpha particle, what is the atomic number of the resulting nucleus? What is the resulting atomic mass? A) atomic number = 86; atomic mass = 222 B) atomic number = 87; atomic mass = 226 C) atomic number = 86; atomic mass = 224 D) atomic number = 87; atomic mass = 224 Ra decays by emitting an alpha particle, what is the atomic number of the resulting nucleus? What is the resulting atomic mass?

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