The naturally occurring isotope rubidium-87 decays by beta emission to strontium-87. This decay is the basis of

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The naturally occurring isotope rubidium-87 decays by beta emission to strontium-87. This decay is the basis of a method for determining the ages of rocks. A sample of rock contains 102.1 μg 87Rb and 5.3 μg 87Sr. What is the age of the rock? The half-life of rubidium-87 is 4.8 × 1010 y.
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General Chemistry

ISBN: 978-1439043998

9th edition

Authors: Darrell Ebbing, Steven D. Gammon

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