Chemistry

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1.)Two different Isotopes are found to have 2 different cpm with Isotope A having a CPM that is 1.5x that of Isotope B? Which one is more radioactive?

2.) And how can CPM for an isotope be increased?

I think that for the same CPM you can have different radiation depending on the isotope. But that doesn't answer the questions

Thanks you so much!

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