Question

Why are isotopes with short half-lives not useful for dating very old rocks?

-because not enough of the parent isotope remains to measure accurately
-because not enough of the daughter product has formed to be detectable
-because neither the parent isotope nor the daughter product will be detectable
-because very old rocks would never have contained these isotopes

Answer 1

because not enough of the parent isotope remains to measure accurately. because not enough of the daughter product has formed to be detectable.

Step-by-step explanation:

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