Rubidium-87, 87 Rb is a relatively common, very long-lived nuclide. Look up and compare its abundance and
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Rubidium-87, 87 Rb is a relatively common, very long-lived nuclide. Look up and compare its abundance and lifetime to 40K. How does 87 Rb decay? Why do you think it was omitted from the list of important naturally occurring radio nuclei?
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