The rubidium isotope 87 Rb is a emitter with a half-life of 4.9 10 10
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The rubidium isotope 87Rb is a β emitter with a half-life of 4.9 × 1010 y that decays into 87Sr. It is used to determine the age of rocks and fossils. Rocks containing the fossils of early animals contain a ratio of 87Sr to 87Rb of 0.0100. Assuming that there was no 87Sr present when the rocks were formed, calculate the age of these fossils.
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N Sr N 0Rb N Rb Also N ...View the full answer
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Jonas Araujo
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